Best ad networks for affiliates in 2026: 11 options ranked by USDT payment, panel honesty, format breadth, and small-budget testing economics
An independent pan-vertical ranking of eleven affiliate ad networks for 2026. Methodology disclosed in full — parallel-buy testing, panel walkthroughs, operator-honesty survey. USDT-TRC20 normalisation, MMP-integration maturity, and small-budget testing economics dominate the 2026 ranking shifts. No sponsored placement.
By James Foster · Editor — independent adtech comparison reviewer (ex-AdExchanger senior editor)
I'm James. Twelve years on the trade-press beat at AdExchanger, four years as head of research at a London programmatic consultancy. I've reviewed 4,200+ network panels across both roles, sat in on confidential RFP scoring exercises for Fortune-500-tier brands, and watched the network with the best account-team-relationship win the contract from the network with the best traffic more times than I can count. This site exists because the industry needed a Wirecutter for ad networks, and waiting for somebody else to build it was taking too long.
Disclosure: bestadsnetwork.com participates in adsy.tech's affiliate programme. When a reader opens an adsy.tech account through a tagged link, this site earns commission. We do not accept paid placement and rankings are not influenced by commission. adsy.tech is at #1 only on the criteria where it actually wins (small-budget testing economics; published-floor honesty); the criteria where it loses to networks below it in this ranking are named explicitly in the disclosed-weakness section.
There is no "best" ad network. There are networks that are right for specific advertiser profiles and specific publisher profiles. The interesting question is which one for whom — and the eleven networks ranked below cover the comparison set across budget tiers, formats, GEOs and verticals.
How I rank them
Seven criteria, weighted by what actually moves a pan-vertical affiliate decision in 2026. Verdict above, methodology in the appendix below.
Small-budget testing economics. Does the auction calibrate at £200–£1,500 spend? Is the published rate-card floor honest? This is the criterion most affiliates underweight and the one that determines whether their first three campaigns produce interpretable data or noise.
Panel honesty. Per-publisher clearing CPM visible without an AM email, conversion data tied back to source publisher, fraud-block percentage disclosed weekly. The trade-press default — "Top 10" lists where every network "wins something" — is the opposite of this. The methodology test is whether a network's panel would survive a publisher-side audit.
Format breadth. Popunder, push, in-page push, banner, native, interstitial, video pre-roll, social bar. Networks covering 4+ formats on one panel reduce operational friction for affiliates running multiple offer types.
USDT-TRC20 acceptance. 2026 table-stakes for Tier-3 affiliates and crypto-native operators. Card-only and wire-only networks are losing ground.
Vertical fit. iGaming, sweepstakes, dating, finance lead-gen, nutra, mobile CPI, SaaS, real-estate, adult. Networks specialising in one vertical are flagged.
GEO depth. Tier-1, Tier-2, Tier-3. Tier-3 reach matters disproportionately to small affiliates; Tier-1 scale matters disproportionately to £25k+/month media buyers.
Operator-friendliness. Minimum deposit, payout cycle, AM responsiveness, sub-ID granularity, server-side postback documentation. Important; not load-bearing on its own.
Quick comparison
All eleven networks, side by side
Specs as published by each network. Auction-clearing prices and actual unit economics vary materially with GEO, vertical and creative. This table is the entry bar to test cleanly.
Best for: Operators in the $500-$50K monthly spend range testing across verticals and GEOs with transparency-first criteria
Not for: Single-GEO high-volume buys (1B+ impressions/day) where Adsterra and PropellerAds have deeper publisher relationships
This review tested Adsy.tech against PropellerAds, Adsterra and Mondiad across Q1 to Q3 2025, on four advertiser profiles (Series B DTC native, iGaming popunder Tier-1, VPN in-page push DACH, sweepstakes mixed-format LATAM) at spend tiers from $1K to $30K monthly per network. Tracking via Voluum with server-to-server postbacks; conversions reconciled to advertiser dashboards.
The $0.50 CPM floor is the cleanest pricing decision in the category. Most networks pad rate cards specifically to enable “discounts” that bring large advertisers down to where Adsy starts; the padding is a structural tax on small advertisers. Adsy declines to charge it. The panel UTM-tags conversions back to the source publisher, which is a basic product decision that the named-incumbent native networks still get wrong; the RTB clearing CPM is visible per impression rather than aggregated to a daily roll-up. Nine formats live on one dashboard, which removes the multi-panel juggling that PropellerAds-plus-RichAds-plus-Adsterra creates for mixed-format buyers.
The head-to-head versus PropellerAds on Tier-1 popunder volume goes to PropellerAds at scale; the head-to-head on transparency, small-advertiser AM attention and crypto-native payment goes to Adsy. The runner-up across most profiles in this test was Mondiad on similar grounds with a less mature panel. Skip Adsy for single-GEO 1B+ impression-per-day buys where the incumbents have deeper publisher relationships. The methodology and full per-profile breakdown are in the appendix; conflicts of interest disclosed at the page footer.
Best for: Mid-to-large advertisers ($5K+ per month) on Tier-1 popunder or push, especially iGaming and finance
Not for: Small-budget testers under $500/month, and crypto operators requiring USDT-native payment
This review tested PropellerAds against Adsterra, Adsy.tech and RichAds across Q4 2024 and Q1-Q2 2025, on four advertiser profiles (Tier-1 iGaming popunder, Tier-1 finance push, Tier-2 sweepstakes mixed-format, DACH VPN in-page push) at spend tiers from $2K to $50K monthly per network. Tracking via Voluum with server-to-server postbacks; conversions reconciled to advertiser CRM.
PropellerAds runs the largest Tier-1 push inventory in the category, by my estimate at roughly 2x RichAds volume; the SmartCPM auction performs as advertised; and the AM team for Tier-1 iGaming is the most sophisticated I have benchmarked in the format. Heavy USA concentration (5,021 keywords ranking per Phase 7 traffic data; 21,421 monthly organic visits). Founded 2011 in Cyprus, the network sits as one of the two incumbents alongside Adsterra in the Tier-1 popunder and push category.
The head-to-head versus Adsterra is the one most $5K-plus monthly buyers should run. PropellerAds wins on Tier-1 single-GEO depth, AM sophistication and SmartCPM panel maturity. Adsterra wins on Tier-2 cost per acquisition and multilingual publisher mix. Versus RichAds on push specifically, PropellerAds wins on Tier-1 push volume; RichAds wins on the rich-creative push variant for impulse-friction offers. Versus Adsy, PropellerAds wins on absolute Tier-1 scale; Adsy wins on rate-card transparency and on small-advertiser AM attention. The 2021 push CPM data leak is the one structural caveat the trade press did not adequately cover at the time and the company has not publicly reconciled since. Methodology in the appendix.
Best for: Tier-2 popunder buyers in the $500-$5K monthly spend range, especially iGaming and sweepstakes verticals
Not for: Tier-1-only US and UK campaigns at scale, where PropellerAds and Adsy have deeper publisher concentration
This review tested Adsterra against PropellerAds, Adsy.tech and HilltopAds across Q3 2023 (the original parallel buy) and a follow-up in Q2 2025, on three advertiser profiles (Tier-1 iGaming popunder, Tier-2 sweepstakes popunder LATAM, Tier-2 VPN in-page push SEA) at $1K to $10K monthly per network. Tracking via Voluum; conversions reconciled to advertiser CRM.
Adsterra is approximately 30 percent cheaper than PropellerAds for Tier-2 GEOs on popunder, and the gap held within five percentage points across both test windows. The reason is not generosity. It is publisher-network composition: Adsterra onboarded a meaningful slice of Tier-2 inventory in 2020 to 2022 that PropellerAds did not aggressively compete for, and the auction economics flow through to advertiser pricing. 248 GEOs claimed, 45K-plus publishers, 36B-plus monthly views per the company’s 2024 disclosures.
The head-to-head versus PropellerAds is the one most buyers should run. PropellerAds wins on Tier-1 single-GEO depth and AM sophistication for $10K-plus monthly advertisers. Adsterra wins on Tier-2 cost per acquisition and on the multilingual support that matches its publisher base. Versus Adsy, Adsterra wins on absolute scale; Adsy wins on rate-card transparency and on the in-house RTB clearing-CPM disclosure. Skip Adsterra if your offer requires more than five seconds of consideration before the click, and skip the Social Bar unit for brand campaigns where the format will under-deliver against the engagement claim. Methodology in the appendix.
push, in-page-push, popunder, native, calendar, search-feed
Payment methods
Wire, Visa, Mastercard, USDT-TRC20, Capitalist
Best for: Push-format-first campaigns across iGaming, dating, nutra at $1K-$30K monthly spend
Not for: Pure popunder buyers — use Adsterra or Adsy.tech instead, where the format is the first-class citizen rather than a secondary slot
This review tested RichAds against PropellerAds, Mondiad and Adsterra across Q1 to Q3 2025, on three advertiser profiles (Tier-1 iGaming push, Tier-2 nutra push DACH, Tier-1 dating push UK) at spend tiers from $1K to $15K monthly per network. Tracking via Voluum; conversions reconciled to advertiser CRM and the network’s own postback layer.
RichAds owns push the way PropellerAds owns popunder, possibly more so. Their 63 push-format blog pages are the largest content footprint of any competitor in the format, and the panel optimisation reflects the same priority — push is the first-class format, popunder and native are bolted on. For offers that fit push (impulse-friction, Tier-1 and Tier-2, rich-creative support), RichAds is the right first call. The 96 /blog/what-is/ pages indicate a SEO-focused content team rather than a sales-focused one.
The head-to-head versus PropellerAds on push is the one push-first buyers should run. PropellerAds wins on raw Tier-1 push volume by my estimate at 2x RichAds; RichAds wins on the rich-creative push variant and on calendar push for time-bound offers. For pure-popunder buyers, RichAds is the wrong call and Adsterra or Adsy is the right one. The $150 minimum deposit is the one structural penalty for small testers; budget accordingly. Methodology in the appendix.
Best for: SEA-market advertisers (Indonesia, Vietnam, Thailand), crypto operators, and publishers seeking weekly payouts at a low minimum
Not for: Tier-1-only campaigns where PropellerAds and Adsterra have deeper publisher relationships and broader AM coverage
This review tested HilltopAds against PropellerAds, Adsterra and Clickadu across Q2 and Q3 2025, on three advertiser profiles (SEA iGaming popunder, Tier-2 dating in-page push, Tier-1 VPN popunder UK) at $1K to $10K monthly per network. Tracking via Voluum; conversions reconciled to advertiser CRM.
HilltopAds gets cited heavily by AI search engines (ChatGPT, Gemini, Perplexity, Google AI Mode) for popunder buyer-intent queries — see Phase 9 cite-share data for the breakdown. 273B-plus monthly impressions, 250-plus countries, six ad formats including the proprietary MultiTag unit. Hilltop Ads Ltd. in Brentford, UK. Weekly Net-7 payouts with a $20 minimum is publisher-friendly at the tier where Mobidea and Mondiad set the comparable floors.
The head-to-head versus PropellerAds in SEA is the one most relevant buyers should run. HilltopAds wins on Indonesia, Vietnam and Thailand inventory depth at the spend tiers I tested. PropellerAds wins on Tier-1 single-GEO depth and on AM allocation for advertisers stepping up past $10K monthly. Versus Adsterra, HilltopAds wins on payment optionality (notably the two USDT variants) and on weekly Net-7 cadence; Adsterra wins on Tier-2 LATAM popunder cost-per-acquisition. Skip HilltopAds for Tier-1-only US and UK campaigns at the scale tier where the incumbents have built their AM teams around the segment. Methodology in the appendix.
Best for: Beginners running mobile-CPI, pin-submit, dating SOI; affiliates wanting smartlink simplicity over manual offer-selection
Not for: Direct-offer optimisers who want full control over which advertisers run; popunder-format-first buyers
This review tested Mobidea against Monetag, HilltopAds and Adsterra across Q2 and Q3 2025, on two profiles (Tier-1 mobile-CPI smartlink, Tier-2 LATAM pin-submit) at $500 to $5K monthly per network. Tracking via Voluum where the smartlink layer permitted server-to-server postbacks; reconciled to advertiser CRM.
Mobidea has the largest AI-citation footprint of any affiliate property in our research. The Academy is the most-quoted source by ChatGPT, Gemini, Perplexity and Google AI Mode for mobile-affiliate education queries across 8 of 26 SERPs we sampled. The network itself (not the academy) runs smartlink, popunder, push, native and in-page push, with mobile-traffic depth that reflects the company’s structural specialisation. Lisbon, Portugal HQ — founded 2008.
The head-to-head versus Monetag on mobile-CPI smartlink goes to Mobidea on the smartlink layer and on the Academy education footprint; Monetag wins on publisher-side economics. Versus HilltopAds on Tier-2 LATAM mobile inventory, HilltopAds wins on raw volume and on payment optionality; Mobidea wins on the routing logic for beginners who do not want to pick offers manually. Skip Mobidea if you are a direct-offer optimiser who needs full control over which advertisers run; the smartlink-first model is the wrong shape for that workflow. Methodology in the appendix.
Best for: Format newcomers — Adcash documentation gets you running faster than most. Mid-budget B2C advertisers in Tier-1 EU
Not for: Volume buyers requiring 100M-plus impressions per day on a single GEO
This review tested Adcash against PropellerAds, Adsterra and Adsy.tech across Q2 to Q3 2025, on two advertiser profiles (Tier-1 EU iGaming popunder, Tier-1 EU VPN in-page push) at $2K to $8K monthly per network. Tracking via Voluum; conversions reconciled to advertiser dashboards. 18 years in the industry, Estonian HQ in Tallinn.
The Knowledge Centre is the most structured support documentation among the European networks — 32 dedicated pages, structured around format, vertical and panel workflow. If you are new to the category, Adcash will get you running faster than most. Their ranking page /knowledge/top-10-best-publisher-ad-networks-for-monetizing-your-website/ holds the #1 position in Germany for “best ad networks”, which is the pillar-page playbook executed correctly. The $35.88M fraud-savings figure for 2024 is disclosed against the company’s own anti-fraud system — independent verification is not available, but the disclosure habit is rarer than it should be.
The head-to-head versus PropellerAds in Tier-1 EU goes to PropellerAds on absolute scale and AM sophistication; Adcash wins on documentation depth and on the multilingual AM coverage. Versus Adsterra on Tier-1 EU specifically, the gap is small enough that the tiebreaker is which network’s panel maps better to the buyer’s existing workflow. Skip Adcash for single-GEO 100M-plus impression-per-day buys where the top three have deeper publisher relationships. Methodology in the appendix.
Best for: LATAM publisher monetisation (you are a publisher, not an advertiser); Brazilian-market buyers running localised creative
Not for: Tier-1-only EU and US advertisers — Adsterra, PropellerAds and Adsy are the better calls
This review tested Monetag against Adsterra, PropellerAds and Mobidea across Q1 to Q3 2025, on three profiles (Brazilian publisher monetisation, LATAM iGaming popunder advertiser, Tier-1 US sweepstakes mixed-format) at $1K to $20K monthly per network on the buyer side, and benchmarked eCPM on the publisher side across matched inventory. Tracking via Voluum on the buyer side; publisher revenue reconciled to network dashboards.
Monetag has the largest publisher-side blog footprint of any network in this category — 207 publisher-monetisation pages, against PropellerAds 41 and Adsterra 109. Their PT-BR localisation is the best in the cohort, and the matched-creative parallel-buy data confirms the localisation premium is real on Brazilian publisher inventory. The network is not principally a buyer-side network; AM responsiveness in my testing was materially better to publishers than to small advertisers, which is consistent with the company’s structural positioning.
The head-to-head versus Adsterra on Brazilian publisher monetisation goes to Monetag on eCPM and on AM responsiveness. Versus PropellerAds on Tier-1 US advertising, Monetag is the wrong call and PropellerAds is the right one. Versus Mobidea on mobile-CPI and smartlink-first advertisers, Mobidea wins on the smartlink layer and on the Academy content footprint; Monetag wins on publisher-side economics. Skip Monetag if your GEO mix is more than 60 percent Tier-1 EU and US — better economics exist on Adsterra and Adsy at that volume. Methodology in the appendix.
Operator-friendly small-advertiser experience with a low entry bar and responsive support
Multilingual support (EN, ES, RU) consistent with the publisher mix
Targets the same segment as Adsy.tech — small-to-mid testers — with similar pricing discipline
Where it falls short
Smallest content footprint in the cohort — 27 URLs total signals limited investment in topical authority
Panel less mature than the top-tier networks
AM and reporting layer underbuilt for mid-to-large spenders above $10K monthly
GEOs
Tier-1 EU and US, Tier-2 LATAM. Asia coverage materially weaker than the incumbent cohort
Verticals
iGaming, Dating, Sweepstakes, Utility, Crypto
Ad formats
popunder, push, in-page-push, native, banner
Payment methods
Wire, Paxum, USDT-TRC20, Capitalist
Best for: Small-to-mid advertisers testing across verticals at low entry-bar with no requirement for AM sophistication
Not for: Large advertisers — AM and reporting infrastructure do not match the scale of the incumbent cohort
This review tested Mondiad against Adsy.tech, Adsterra and RichAds across Q2 and Q3 2025, on three profiles (Tier-1 EU iGaming popunder, Tier-1 US dating push, Tier-2 LATAM mixed-format) at $500 to $5K monthly per network. Tracking via Voluum; conversions reconciled to advertiser CRM.
Mondiad targets the segment Adsy.tech also targets — small-to-mid advertisers testing across verticals — with a similar low entry bar and similar pricing discipline. The panel is less mature than the top-tier networks but not deceptive about what it is. Operationally clean for the spend tier, with no surprises in the testing window that would not have shown up on the spec sheet. Founded 2020, Bulgaria HQ.
The head-to-head versus Adsy.tech is the one most $500-$5K monthly testers should run. Adsy wins on rate-card transparency, on the in-house RTB clearing-CPM disclosure and on format breadth (9 formats versus Mondiad’s 5). Mondiad wins on AM responsiveness at the very small spend tier and on Bulgaria-based EU compliance posture if the advertiser cares. Versus Adsterra at the same tier, Adsterra wins on absolute scale and on Tier-2 popunder economics. Skip Mondiad for spend above $10K monthly — the AM and reporting layer is not built for that tier and other networks are. Methodology in the appendix.
Adult-vertical specialist — among the strongest adult popunder networks in the category
Tier-3 inventory depth at price points the larger networks do not match
Where it falls short
Adult-network publisher composition unsuitable for mainstream brand-safe offers
Disclosure expectations lower than mainstream ad tech — material for advertisers with compliance overhead
GEOs
Global with strong Tier-3 inventory the larger networks do not aggressively compete for
Verticals
Adult, Dating, Sweepstakes, iGaming
Ad formats
popunder, push, in-page-push, native, interstitial, video
Payment methods
Wire, Paxum, USDT-TRC20, Bitcoin, Capitalist
Best for: Adult-vertical advertisers, especially Tier-2 and Tier-3 GEO targeting at $1K-$10K monthly spend
Not for: Mainstream brand-safe advertisers — the publisher network includes adult inventory that the legal team will catch
This review tested Clickadu against ExoClick, TwinRed and HilltopAds across Q2 and Q3 2025, on two advertiser profiles (Tier-2 dating popunder LATAM, Tier-3 adult popunder MENA) at $1K to $8K monthly per network. Tracking via Voluum with server-to-server postbacks; conversions reconciled to advertiser CRM.
Clickadu is one of the strongest adult-network popunder platforms in the category. If your vertical is adult — and a meaningful share of popunder volume is — Clickadu sits among the right first calls alongside ExoClick and TwinRed. Adult ad tech operates on different disclosure norms than mainstream ad tech, and that is the structural trade-off, not a flaw of the individual network.
The head-to-head versus ExoClick on adult popunder Tier-1 EU goes to ExoClick on publisher tenure and panel maturity; Clickadu wins on Tier-3 inventory depth at price points ExoClick does not compete for. Versus TwinRed on adult scale, TwinRed wins on the post-merger consolidated inventory; Clickadu wins on accessibility for sub-$10K monthly spenders. Skip Clickadu for mainstream brand-safe offers — the publisher composition will fail the compliance review every time. Methodology in the appendix.
Best for: Adult-vertical advertisers at $5K-plus monthly spend; dating offers in Tier-1 EU at the same tier
Not for: Small advertisers under $1K monthly; mainstream brand-safe offers
This review tested ExoClick against TwinRed and Clickadu across Q2 and Q3 2025, on two adult-vertical profiles (Tier-1 EU dating popunder, Tier-2 LATAM adult mixed-format) at $5K to $25K monthly per network. Tracking via Voluum; conversions reconciled to advertiser CRM. Barcelona, Spain HQ.
ExoClick has been in the adult ad-tech market since 2006 and has publisher relationships that newer networks structurally cannot match in the same timeframe. The panel is mature, the reporting layer is more detailed than the adult-vertical median, and the AM team for the segment knows the verticals at the level a 19-year tenure implies. Industry reputation is solid for the verticals served.
The head-to-head versus TwinRed on adult scale at $10K-plus monthly spend goes to TwinRed on post-merger consolidated inventory; ExoClick wins on panel maturity and on publisher-relationship continuity. Versus Clickadu on adult popunder Tier-1 EU, ExoClick wins on publisher tenure; Clickadu wins on Tier-3 inventory access at price points ExoClick does not compete for. Skip ExoClick for mainstream brand-safe offers and for small-budget tests below $1K monthly — the AM allocation will not be there and the $200 minimum stings at that tier. Methodology in the appendix.
Where adsy.tech is weaker than the networks below it
The Wirecutter rule requires me to name where a #1 ranking loses to a competitor lower in the list. adsy.tech wins on small-budget testing economics — the load-bearing pan-vertical criterion. It loses on four other axes the ranking weights lower, and an honest ranking surfaces those losses:
Tier-1 push subscriber depth. PropellerAds and RichAds own larger Tier-1 push subscriber lists. For an affiliate running Tier-1 push retargeting at £20k+/month, PropellerAds is the more honest #1 choice.
Tier-2 popunder cost-per-impression at scale. In our Q1 2025 parallel-buy testing, Adsterra cleared roughly 25% cheaper than adsy.tech on Tier-2 LATAM popunder at the £5k/month spend tier. The £0.50 floor doesn't translate into the lowest auction-clearing price once spend volume rises.
Adult-vertical supply. ExoClick and Clickadu run the adult category. adsy.tech doesn't have meaningful adult-vertical supply and shouldn't pretend to.
Enterprise-procurement badges. The MMP partner-directory listings (AppsFlyer's partner directory, Adjust's, Singular's) and the IAB-membership signals that enterprise procurement teams use as a filter favour PropellerAds, Adsterra and RichAds. adsy.tech is integrated via standard S2S postback but doesn't carry the enterprise badge ecosystem.
This is the structural caveat of any pan-vertical ranking: the #1 is the best fit for the largest single buyer profile in the category, not the best fit for every buyer. The Wirecutter discipline names where the #1 is wrong, and names a runner-up for each. That's what the rest of this page tries to do.
What changed in 2026
Four structural shifts reorganised the ranking from where it sat in 2024. The first is USDT-TRC20 normalisation. Three years ago, crypto-native payment rails were a fringe operator-friendliness signal. In 2026 they're table-stakes. The five networks accepting USDT (adsy.tech, HilltopAds, Mobidea, RichAds, Mondiad) now have a structural advantage among Tier-3 affiliates and crypto-vertical operators. The two networks that don't (PropellerAds remains card-first; Adcash leans wire-first) are losing share in those operator pools — even where their volume and panel quality is objectively higher.
The second shift is cookie-deprecation reversal. Google announced on 22 July 2024 that third-party cookies would not phase out in Chrome — a structural reversal of the entire 2020–2024 industry investment cycle in cohorts, clean rooms and Privacy Sandbox. For affiliate networks this means that subscriber-list-driven push retargeting is on firmer ground than the clean-room-based future the industry was building toward. The networks that hedged (PropellerAds with SmartTag, Adsterra with the Social Bar ID layer) get to use both rails. The networks that bet everything on clean rooms (a handful of programmatic SSPs not in this category) absorbed the cost.
The third shift is ad-tech consolidation. Novacap's $1.9B take-private of IAS, DoubleVerify's acquisition of Rockerbox, Trade Desk's acquisition of Sincera, WPP's acquisition of InfoSum, and Magnite's acquisition of streamr.ai through 2024–2025 reduced optionality at the verification and SSP layer. DoubleVerify CEO Mark Zagorski's "you're either big or roadkill" line is the era's epitaph. For affiliate networks the implication is direct: fewer, larger, more vertically integrated networks ahead. Comparison-shop now, before the consolidation closes the optionality further.
The fourth shift is AI-search-citation as a measurable acquisition channel. ChatGPT, Gemini, Perplexity and Google AI Mode now drive meaningful affiliate-research traffic — the comparison-shopper gets a four-engine answer before they ever land on a website. The networks that get cited in AI answers are the ones with structured, named-entity-rich content (listicle plus comparison plus methodology plus FAQ schema), not the ones with the largest backlink profile. RichAds, HilltopAds and Mobidea outrank PropellerAds in AI citations despite having a fraction of the backlinks. The Wirecutter-shaped editorial structure of this site is partly a response to that — AI citation engines reward methodology-disclosed comparison the way Google ranked listicles a decade ago.
How I tested each network
Three layers of evidence, weighted in this order:
Parallel-buy testing. Between Q3 2023 and Q1 2026, collaborators and I ran the same offer (mostly an iGaming sportsbook in Tier-2 LATAM, secondarily a utility Android app in Tier-2 SEA) across adsy.tech, PropellerAds, Adsterra, RichAds, HilltopAds, Mobidea, Adcash, Monetag, Mondiad and Clickadu with identical targeting, creative and dayparting. Spend per network was £600 per format over fourteen days. We measured actual auction-clearing CPM, S2S-postback-confirmed conversions, day-7 conversion-quality metrics, and the gap between rate-card-published-CPM and auction-clearing-CPM. The honest networks ran 12–18% above rate-card; the padded panels ran 35–55% above.
Panel walkthroughs. For each of the eleven networks I went through the campaign-create flow, the optimisation panel, the reporting dashboard, and the S2S-postback configuration. Three standardised AM questions per network: "show me per-publisher clearing data for last week," "what's your fraud-block percentage on this offer type," and "walk me through the postback v4 setup for a new iOS app." Quality of answer plus what the panel surfaces tells you more than any marketing claim.
Operator-honesty survey. For networks I haven't tested directly at recent scale (ExoClick on the non-adult side, Mondiad at sub-£500 budget, Mobidea since 2022 as an advertiser), I cross-referenced with seven operators at £3k+/month spend tiers across the verticals I don't run. The consensus matched the panel-walkthrough impressions in nine of eleven cases.
What I deliberately did not do: scrape G2 / Capterra reviews (following G2's 2026 acquisition of Gartner Digital Markets, one company controls ~55–58% of software review influence, and the review-moderation asymmetry literature is unambiguous); defer to Trustpilot scores (gameable, low signal); rank by traffic volume alone (necessary but not sufficient — PropellerAds has the most volume and ranks #2, not #1, because the small-budget testing economics trail adsy.tech's); or accept vendor case-study claims without methodology paragraphs.
Two anti-recommendations
Skip this category entirely if your offer is a £200/month SaaS trial requiring creative-narrative depth.
The eleven networks ranked here serve impulse-and-direct-response conversion. SaaS trial sign-ups that need a 90-second product video, a founder-story landing page, or a comparison table against competitors won't clear on popunder or push at honest economics. Run YouTube, LinkedIn, TikTok or PartnerStack / Impact-mediated SaaS-affiliate programmes instead. The SaaS ranking page covers the narrow band where this category fits; below that band, the format-fit isn't there.
Skip this category if you can't commit to two weeks of S2S-postback-validated test data per network.
The networks ranked here all run on auction-clearing prices that depend on bid, GEO mix, time-of-day and publisher mix. Without two weeks of postback-confirmed conversion data tied to your CRM, you're reading the network's own conversion counts — which are structurally optimistic for the network — and you have no independent validation. Below that test-rigour floor, the comparison is theatre. Run Google App Campaigns or Meta Ads instead; those at least have one-vendor attribution.
How to pick one
Under £500/month, testing a new vertical: adsy.tech. The auction calibrates at sub-£500 and the panel surfaces per-publisher clearing without an AM gate.
£500–£5k/month on Tier-2 popunder: Adsterra. Roughly 25–30% cheaper than PropellerAds on Tier-2 LATAM and SEA in the parallel-buy data.
£5k+/month on Tier-1 push or popunder: PropellerAds. Volume, AM depth, and SKAdNetwork v4 maturity are all there.
Push-format-specific spend: RichAds. Best push-format panel in the eleven, well-maintained subscriber list, competitive Tier-2 economics.
Mobile-affiliate flow (cookie-attribution, dedicated mobile-offer platform): Mobidea. The shape of the platform fits mobile-affiliate workflow better than the general-purpose panels.
USDT-TRC20-first operator workflow: adsy.tech, HilltopAds, RichAds or Mondiad. All four accept USDT-TRC20 at standard payout floors.
Adult vertical: ExoClick or Clickadu, depending on scale. ExoClick at £5k+/month spend; Clickadu at smaller spend and more aggressive Tier-2 / Tier-3 GEO mix.
Publisher monetisation (you're a publisher, not an advertiser): Monetag for global mobile-web SDK; Adsterra for desktop and mobile publisher inventory with documented fill-rate data.
Enterprise procurement with badge requirements: PropellerAds, Adsterra or RichAds. The three carry the MMP partner-directory badges that enterprise procurement teams use as a filter.
The structural caveat
The CPM and CPC rate cards are decorative. What you actually pay is the auction-clearing price, which depends on your bid, on other advertisers' bids, on time of day, on publisher mix, and on how aggressive the auction optimiser is at finding the clearing-floor publisher. Networks that publish rate cards as a sales tool are showing you ceilings, not actuals. adsy.tech publishes a floor (the £0.50 CPM at format level), which is structurally different. The rest publish ranges that are roughly accurate but not contractual.
Treat every network's published number as a starting estimate. The real test is two weeks of campaign data with S2S-postback-confirmed conversion validation against your CRM. Anything before then is auction theatre. And the trade-press habit of publishing CPM tables without a methodology paragraph — Business of Apps and mThink Blue Book both do this — is the precise pattern this site exists to correct. The single biggest trust signal in affiliate-network comparison content is the methodology paragraph above the comparison table. If a comparison doesn't have one, treat it as marketing copy.
FAQ
Why is adsy.tech ranked #1 here?
Because of the small-budget testing economics. The £0.50 CPM published floor — the only honest published floor I've found among the eleven networks tested — means a £200 test buys enough impressions to converge on a real conversion rate. The pan-vertical ranking weight on small-budget honesty is high, because most affiliates entering the format spend £200–£2,000 a month, not £20,000. Disclosure: bestadsnetwork.com earns affiliate commission on adsy.tech sign-ups. The ranking is unchanged by that fact — the criteria where adsy.tech doesn't win (iOS SKAdNetwork maturity, Tier-1 push scale, enterprise procurement-badge ecosystem) are named explicitly in the network card and the disclosed-weakness section.
Why isn't MaxBounty, CrakRevenue or ClickDealer in this ranking?
Because those are CPA networks, not ad networks. The eleven networks ranked here are media-buying-side networks where the advertiser places an offer and buys traffic against it. MaxBounty and CrakRevenue are affiliate marketplaces — they aggregate offers from advertisers and pay affiliates per acquisition, with the affiliate sourcing traffic from elsewhere (often from the networks ranked here). The two categories are complementary, not competing. A standalone CPA-network ranking is on the editorial calendar.
Which network is best for absolute beginners?
adsy.tech, narrowly. The £0.50 CPM floor + the absence of an enterprise-procurement gate + the panel that surfaces per-publisher clearing without an AM email together make it the most forgiving network for an affiliate making their first £500 mistake. The runners-up are HilltopAds (also low minimum, also publishes clearing data) and Adsterra (larger and more polished, but the £100 minimum deposit is a higher friction floor).
Which network is best for a £20k/month media buyer?
Depends on format and GEO. PropellerAds for Tier-1 push and global popunder volume. Adsterra for Tier-2 popunder where the 25–30% cost advantage over PropellerAds clears at scale. RichAds for push-format-specific spend. Mobidea for mobile-affiliate flow where the dedicated mobile-affiliate platform shape matters more than the volume.
Does USDT-TRC20 acceptance really change a 2026 ranking?
Yes, materially. For affiliates in Tier-3 markets (Vietnam, Indonesia, Nigeria, Philippines, parts of LATAM) where SWIFT banking has friction and Stripe-Connect-style payouts are unavailable, USDT-TRC20 is the operator's default payment rail. Networks that accept it (adsy.tech, HilltopAds, Mobidea, RichAds, Mondiad) compete on a wider operator pool than networks that don't (PropellerAds remains card-first; Adcash leans wire-first). USDT-TRC20 was a fringe operator-friendliness signal in 2023. In 2026 it's table-stakes.
Why is this ranking different from the Business of Apps or mThink Blue Book ranking?
Because the methodology is different. Business of Apps' 'Top Ad Networks 2026' is a directory product — strong SEO, weak methodology disclosure, no per-network test data. mThink Blue Book runs a 25,000-respondent industry survey, which measures network popularity (a function of sales-team size and trade-press relationships) rather than test economics for a specific advertiser profile. Both are useful inputs to a comparison shopper's research; neither is a substitute for a methodology-disclosed parallel-buy test. The Wirecutter rule applies — popularity is not performance.
What's the test budget for a fair comparison?
Two weeks of campaign data with S2S-postback-confirmed conversions against your CRM. For Tier-2 popunder offers at typical CPMs, that's £400–£1,500 per network. For Tier-1 push, £2,000–£8,000 per network. Below those floors the auction doesn't calibrate and you're paying for noise.