What is noop?

NOOP is a companion app for WHOOP fitness and recovery straps that runs entirely on your own phone or computer instead of relying on WHOOP's own cloud service, so your health data stays local, offline, and under your control rather than syncing to any account. This particular repository is not the original project, it is a preservation copy of the source code and release builds after the original developer's repository was deleted and the project appeared to be abandoned, kept online for people who already rely on the app. The app shows your daily health metrics, similar to the official WHOOP app's "today" screen, along with a view of how any single metric has trended over time, styled with an animated visual design the project calls Liquid Metal, and it is built to look and work the same way across iPhone, Android, and Mac. It works with WHOOP 4.0 and 5.0 straps. Because the project has no paid developer accounts tied to any app store, the builds are distributed a bit unusually. The macOS build is not notarized by Apple, so the system will initially warn that it is unverified. Removing a quarantine flag once, or approving it once in system security settings, lets it open normally after that. The Android build is an unsigned file you install directly rather than through the Play Store, so Android's built in protection may warn about it once, and there is a documented way to allow it through. The iOS build is an unsigned file you sign yourself using a free Apple account through tools like AltStore or SideStore, since there is no App Store listing, and that signature needs to be renewed roughly every week, which tools like AltStore can do automatically. The project keeps all of your data on your own device, with no automatic backup to any cloud account, so reinstalling the app is safe and simply starts fresh. It is distributed under the PolyForm Noncommercial license, meaning you can use, inspect, and modify it, but not for commercial purposes. The full README is longer than what was shown.