Use Cases

Skipping authentication

qckfx captures the simulator's disk state when you record, including auth tokens, session data, and Keychain entries. If you're logged in when you record, every test replay starts already logged in. There's no need to automate login flows or maintain test credentials.

AI-native apps (LLM-dependent UI)

Apps that render UI based on LLM responses produce different output each time, making them impossible to test deterministically with live backends. qckfx records all network responses including WebSockets, so the exact same LLM response is replayed every run. This makes visual regression testing reliable even for non-deterministic backends.

Refactoring with confidence

Refactors that don't change visible behavior still require manual QA to confirm nothing broke. Record key user flows once, then run them after any refactor to catch visual regressions automatically. This covers more surface area than manual spot-checking and catches regressions humans miss.