Mobile app ad fraud protection for SaaS
Fake trial sign-ups, SDK-spoofed installs, and bot-driven clicks waste your mobile UA budget and corrupt the user quality data that drives SaaS pricing and onboarding decisions.
Trusted by leading brands worldwide
SaaS app UA fraud corrupts trial conversion data and destroys CAC accuracy
SaaS mobile apps present a distinct fraud profile: the value signal fraudsters target is not just the install but the trial sign-up or account creation event that follows. Because SaaS UA campaigns are frequently optimised toward in-app events like registration completion, feature activation, and free-to-paid conversion, fraudsters simulate exactly these actions to trigger CPA payouts and pass quality threshold filters. Your analytics show trial registrations. Your sales pipeline shows no real prospects because the users never existed.
The impact on customer acquisition cost calculations is severe. CAC for mobile-acquired SaaS users is calculated against a denominator that includes fraudulent installs and fake sign-ups. When those events are removed, your true CAC for mobile channels is often 30 to 50 percent higher than reported, making what appeared to be an efficient mobile growth channel look significantly less attractive. UA managers scaling mobile spend based on inflated conversion rate data are making decisions that cannot be justified by the revenue those users will generate.
Fraud also corrupts your onboarding funnel analysis. If fraudulent users enter your trial cohorts, your conversion rates from trial to paid appear artificially low because fake accounts never convert. Product and growth teams optimising the onboarding flow based on this data may make unnecessary changes to funnels that are actually performing well, while the real problem is the quality of users entering the top of the funnel.
How Tapper protects saas advertisers on Mobile
Three steps from connection to clean data, no engineering required.
01
Connect Tapper to your MMP and SaaS UA campaigns
Tapper integrates with your MMP and the ad networks running your mobile app install and re-engagement campaigns, monitoring every click, install, and sign-up event from the moment of integration.
02
Fake installs and simulated sign-up events identified
SDK spoofing signatures, bot-driven session patterns, and simulated registration events are flagged before they enter your attribution data or trigger CPA payouts tied to trial sign-ups.
03
CAC and trial conversion data reflect real users
With fraudulent installs and fake sign-ups excluded, your mobile CAC is calculated against genuine prospects. Trial-to-paid conversion rates, onboarding funnel data, and channel ROAS reflect actual user behaviour, not fraud.
Ad fraud in saas by the numbers
Data from Tapper's platform analysis and published industry research.
28%
Of mobile installs are fraudulent on average
40%
Of mobile fraud uses SDK spoofing to fake sign-up events
$10B
Lost to mobile ad fraud globally in 2023
30-50%
CAC underestimate typical without install fraud protection
How much are you losing to click fraud?
Based on a 19% fraud rate for SaaS on Mobile App. Move the slider to see your estimated monthly loss.
Industry
SaaS
19% fraud rate
Monthly spend
$1,000
Avg. cost per install (CPI) (optional)
Your estimated numbers
Monthly fraud loss
$190
Annual fraud loss
$2,280
Monthly budget recovered with Tapper
$162
Tapper vs MMP Built-in Fraud Protection
See exactly where the gaps are, and why they matter to your saas campaigns.
SDK spoofing detection
Full session lifecycle behavioural analysis
Device signal matching only
Simulated sign-up event detection
Post-install event behavioural scoring
Install-level checks only
CAC data accuracy
Fraudulent installs excluded from conversion counts
Fake installs included in CAC calculation
Trial cohort integrity
Real trial users only in cohort analysis
Fraudulent sign-ups distort trial data
Detection speed
Under 3 seconds per click and install
Post-attribution batch review
Cross-network campaign coverage
All UA networks monitored simultaneously
Single MMP view only
Trusted by industry leaders
See how companies are protecting their ad budgets and improving ROI with Tapper.
“Tapper played a key role in improving the efficiency of Du's performance marketing activity by addressing traffic quality issues within campaigns. Following implementation, Du achieved a 13% reduction in CPA and an 8.6% increase in order rate, demonstrating a clear improvement in conversion quality and overall campaign effectiveness.”
Joseph Elbcherrawy
Client Leadership Director, Mindshare, a WPP Media Brand
“During our Tapper trial for INFINITI, we uncovered low-quality traffic that wasn't visible inside the platforms. Removing it delivered a 14% uplift in conversions and an 11.4% reduction in CPA - a meaningful efficiency gain for INFINITI's 2026 growth plans.”
David Barnes
Data & Technology Lead, Omnicom Group
“With Tapper's protection we were able to identify and block invalid clicks in real time. The impact was immediate as our cost per acquisition dropped by 30% and ROAS improved significantly. More importantly, Tapper gives us the confidence that our campaigns are reaching genuine customers, which makes it truly invaluable.”
Dimitris Bakas
Senior Performance Marketing, Public Group
“We started using Tapper to get better visibility on where our clicks were coming from, and ended up cutting wasted spend by over 12%. The performance uplift was clear, and for the first time, we could trust the numbers we were seeing. It's a total game-changer for campaign integrity.”
Stuart Parkin
Director of Operations, Regit
“Tapper's blocking technology purifies our paid media traffic which roughly equates to a 36x return against its subscription costs. It's certainly one of the easiest-to-implement tools in our entire marketing stack.”
Reno Mindemann
Head of Growth, Kama Capital
“We've been using Tapper for over a year now, and it has become a core part of how we run paid media. Invalid traffic was always something we knew existed but couldn't really act on. Tapper changed that. We're now saving up to $50K per year, and on PureSquare specifically, we saw around a 20% decrease in CPA. Based on these results, we decided to roll it out across other ventures under Disrupt as well.”
Nurkan Kirkan
GTM Consultant / Paid Growth, Disrupt.com
Trusted by leading brands worldwide
Frequently asked questions
Everything you need to know about protecting saas ad spend on Mobile App.
Fraudulent installs generate fake trial accounts that never convert to paid subscriptions. When these fake accounts are included in your trial cohort, the conversion rate from trial to paid appears lower than it actually is among real users. Product teams may conclude that onboarding or the product itself is the problem, when the real issue is fraudulent traffic entering the top of the funnel.
Mobile app install campaigns on ad networks offer predictable CPI payouts and, increasingly, CPA payouts tied to in-app events like sign-ups. Fraudsters optimise toward these payout structures. Mobile attribution is also more complex than web attribution, giving fraudsters more opportunities to exploit tracking windows and attribution logic in ways that are harder to detect with standard MMP tools.
Yes. Tapper analyses the full session lifecycle including post-install events. Simulated sign-up flows, where fraudulent operations script registration interactions on real or spoofed devices, exhibit behavioural signatures that differ from genuine user sessions. Tapper flags these events before they trigger CPA payouts or enter your analytics.
CAC is calculated by dividing UA spend by the number of acquired customers. When fraudulent installs are counted as acquired users in the denominator, CAC appears lower than it truly is. The installs paid for never become customers, so the revenue models built on inflated acquisition efficiency will consistently underperform. Removing fraud from your attribution data gives you an accurate CAC to model payback periods and growth economics.
Tapper works alongside your existing MMP. It does not replace AppsFlyer, Adjust, Kochava, Singular, Branch, or any other attribution platform. Tapper adds a fraud detection layer that filters invalid events before they enter your MMP attribution data. Your MMP continues to function as the source of attribution truth, but with cleaner inputs.
Protect other industries on Mobile App
Tapper covers fraud protection for every major vertical on Mobile.
Stop paying for fraud on your saas campaigns
Book a demo and we will show you exactly what Tapper would block on your account, before you commit to anything.