Case Study: Mobile game developer MyTona cuts ad fraud to under 1% and achieves 100% purchase accuracy with Adjust

How Games can prevent fraud for 100% effectiveness

MyTona, a successful free-to-play mobile game developer behind hits like Seeker’s Notes (20M+ downloads), was facing rising mobile ad fraud as it scaled paid user acquisition across multiple countries. Fraud rates climbed with increased installs—especially in higher-risk regions like Southeast Asia—and in-app purchase data was unreliable (up to ~20% discrepancy on Google Play), threatening UA budgets, revenue reporting and strategic decisions.

To fix this MyTona deployed Adjust’s Fraud Prevention Suite to block fraudulent installs in real time and Adjust’s Purchase Verification to confirm store transactions instantly. The combination cut multi-country fraud from ~4% to under 1%, delivered nearly 100% purchase accuracy, exposed severe outliers, and delivered a ~10% increase in ROAS—enabling confident, data-driven marketing and product decisions.

MyTona

Elena Vinokurova

Marketing Manager