OpenStrap is free, MIT-licensed, and has no company, no subscription, and no revenue behind it. It exists because a perfectly good sensor turned into a bracelet and that seemed like a stupid reason to throw hardware away.
If it gave your band a second life and you'd like to chip in, these are the only addresses. There is no other donation channel, no token, and nothing for sale.
bc1qvtcch38dcwp967ar764uu6eetw7tf907844wfq
0x8310C89393366b7eBCD47ABa82e1dfB5ECeFFbD9
Please don't feel obliged. The genuinely valuable contributions are free:
- Open an issue when a number looks wrong. Bug reports from real bands on real wrists are worth more than money — there's only one person's physiology in the test data otherwise.
- Decode something. A lot of the event table is empirical guesswork. If you work out a field we don't understand, that helps everyone with one of these bands. See protocol.
- Tell someone whose strap is in a drawer.
They don't buy priority, features, or support. This isn't a paid product and turning it into one would defeat the point. What they realistically cover is the Apple Developer Program membership that keeps the TestFlight build alive, test hardware (a second band is the main thing that would speed up WHOOP 5 support), and coffee.
Nothing is gated behind paying, and nothing ever will be.
Not affiliated with, endorsed by, or connected to WHOOP.