Ray
Best for: iOS 18 + Apple Watch users who want AI workout coaching
Apple Watch
| Website | https://www.rayfit.com |
|---|---|
| Price | $19.99/mo, $39.99/3 mo, $119.99/yr; free first week |
| Works with | Apple Watch app + Apple Health |
| iPhone | yes (iOS 18+) |
| Android | no (waitlist) |
| Heart-rate variability (HRV) | Not listed |
| Builds workouts | yes |
| Last checked | 2026-10-15 |
HRV = heart-rate variability — how much the time between beats changes; often used as a recovery signal.
Device needed
This coach needs a wearable. Amazon links may earn us a commission; see our affiliate disclosure.