NetDrift

NetDrift is a web app + mobile SDK that helps QA teams reproduce and diagnose the most common “works on Wi‑Fi” failures: flaky cellular handoffs, captive portals, DNS weirdness, IPv6/IPv4 differences, packet loss, and high-latency spikes. Instead of generic throttling, it records a lightweight “network fingerprint” during a failing session (carrier, radio type, RTT/jitter, DNS resolver behavior, TLS handshake timings, endpoint reachability) and lets you replay that profile on demand in CI device farms or local devices. It also flags risky API patterns (no retries, aggressive timeouts, missing idempotency keys) and correlates failures with backend regions/CDN POPs. This is not magic: it won’t fix bad code, but it will drastically reduce time wasted on non-reproducible network-related bugs and finger-pointing between mobile and backend teams.