Programmed training, tracked. iPhone + Apple Watch.
The beta is iPhone-only. It's distributed through Apple's TestFlight, so you'll need an iPhone — an Apple Watch is a bonus, not a requirement. On Android? Sign up anyway and I'll reach out when that opens.
I add testers in batches, so give it a day or two. The invite arrives from Apple — install TestFlight, tap through, and you're training on it.