Fintech / E2E + Crowd Testing
Hardening a UPI unicorn’s app across 100+ real devices before scale
India’s UPI unicorn · Fintech · UPI
263+
defects surfaced
3×
faster high-priority bug ID
106+
devices tested
75%
of issues found beyond the lab
The context
A UPI unicorn needed a consistent, high-quality experience across India’s fragmented mobile ecosystem — the make-or-break for trust in payments.
The challenge
- Functional stability across a wide range of Android/iOS devices.
- Real-world failures in QR scanning, transaction flows and multi-task interruptions.
- No read on how the app compared to competing UPI giants.
What we did
End-to-end testing across real devices plus competitor benchmarking, then large-scale crowd testing (Bug Bash) with real users across Tier I–III cities.
- E2E across 16+ real devices covering edge cases (network drop, device switch, interruptions).
- Benchmarked transaction speed and flow against other UPI giants.
- Crowd-tested on 100+ devices, triaging validated, reproducible bugs by severity.
“Before they crowd-tested across a hundred-plus real devices, we were blind on the long tail. Three-quarters of what they found, our lab never would have.”
Stack & tooling
Qapitol crowd-sourced Bug Bash