edge

> [!WARNING]
> **WHOOP users: do not reconnect to the official WHOOP app.**
>
> If you use OpenStrap or another open-source app, or plan to switch to one later,
> do not connect your band to the WHOOP app again. It can install firmware updates
> automatically.
> Uninstall or disable the WHOOP app to prevent it from updating your band.
>
> Users report blocked data access on WHOOP 5.0 / MG firmware **50.43.1.0** and
> **50.43.2.0**. Bluetooth may still connect while history or live data is withheld.
> OpenStrap cannot issue the WHOOP-signed membership token needed to unlock an
> affected band. See [firmware compatibility](#whoop-firmware-compatibility)
> for the evidence and its limits.

<img width="1774" height="887" alt="OpenStrap Edge" src="https://github.com/user-attachments/assets/66653a25-ac97-4f8c-8be1-6c9fceeaf08b" />

A health app for your wearables. No subscription, no fees, private by default.

<a href="https://trendshift.io/repositories/51733?utm_source=repository-badge&amp;utm_medium=badge&amp;utm_campaign=badge-repository-51733" target="_blank" rel="noopener noreferrer"><img src="https://trendshift.io/api/badge/repositories/51733" alt="OpenStrap%2Fedge | Trendshift" width="250" height="55"/></a>

[![Download for Android](https://img.shields.io/badge/Android-Download%20APK-3DDC84?style=for-the-badge&logo=android&logoColor=white)](https://github.com/OpenStrap/edge/releases/latest)
[![Download on TestFlight](https://img.shields.io/badge/iOS-TestFlight-0D96F6?style=for-the-badge&logo=apple&logoColor=white)](https://testflight.apple.com/join/2BVSwq65)

As featured in [Hackaday](https://hackaday.com/2026/07/15/making-a-locked-down-wearable-work-without-a-subscription/) and [Adafruit](https://blog.adafruit.com/2026/07/15/openstrap-edge-makes-a-whoop-4-0-band-useful-without-a-subscription/).

| <img src="screenshots/today.png" width="160" alt="Today"> | <img src="screenshots/health.png" width="160" alt="Health"> | <img src="screenshots/sleep.png" width="160" alt="Sleep"> | <img src="screenshots/heart-rate.png" width="160" alt="Resting heart rate"> | <img src="screenshots/workout.png" width="160" alt="Workout"> |
|:--:|:--:|:--:|:--:|:--:|
| Today | Health | Sleep | Heart rate | Workout |

## Devices

**Supported:** WHOOP 4.0, 5.0, MG, subject to the [firmware restrictions below](#whoop-firmware-compatibility).

**Being built:** Oura Ring, Garmin, Pebble, Colmi, Ultrahuman, Mi Band and more.

Full feature list: [docs/FEATURES.md](docs/FEATURES.md).

## WHOOP firmware compatibility

Research checked on **November 9, 2026**. These are community observations, not a
complete list of affected firmware versions.

| Device / firmware | Evidence |
|---|---|
| WHOOP 5.0, **50.43.1.0** | A [November 7 OpenStrap report](https://github.com/OpenStrap/edge/issues/673) describes successful Bluetooth connections and command replies, but no history or live HR. Data resumed after the official app installed a WHOOP-signed membership token. |
| WHOOP 5.0 / MG, *