OpenStrap/edge is an open-source application that allows users to utilize the WHOOP 4.0 fitness tracker without a paid subscription by connecting directly via Bluetooth and processing data locally on iOS and Android devices. The developer reverse-engineered the device's protocol and implemented independent analytics based on published research, effectively bypassing WHOOP's cloud dependency.
Background
WHOOP is a popular fitness tracking brand that typically requires a monthly subscription to access its full suite of health analytics and data storage features through its proprietary app.
- Source
- Lobsters
- Published
- Jul 16, 2026 at 08:38 PM
- Score
- 7.0 / 10