The thing people actually want from WHOOP is the morning: a recovery number, a strain target, and a sleep score. An Apple Watch already records everything needed to compute those. It just does not compute them. That is the gap these apps fill.
What the watch gives you
Worn overnight, an Apple Watch writes to Apple Health: sleep stages, heart rate through the night, HRV samples, resting heart rate, respiratory rate on Series 8 and later, and every workout you record. Wrist temperature is stored too on recent models. None of this needs a subscription. Apple Health is free and lives on your phone.
What the watch does not do
There is no recovery or readiness score in Apple’s Health app, no strain score, and no sleep score with a target that moves with your need. The Vitals app on watchOS flags when metrics are out of range, which is useful, but it is not a daily readiness number. So the watch is a very good sensor with no coach attached.
The apps that add the WHOOP layer
- Sixteen. Reads Apple Health, scores sleep against your own need, recovery from HRV and resting heart rate against your baseline, and day strain from heart rate zones plus what you lift. Then it does something with the number: recovery sets the strain target, and sleep and strain earn screen time while bedtime locks the apps that steal it. Also reads a WHOOP strap directly if you have one. $99 once or $19.99 a month.
- Athlytic. The closest recreation of WHOOP’s screens on Apple Watch, with recovery, exertion and sleep. Well liked on r/AppleWatch. Subscription with a trial.
- Bevel. Recovery plus an AI coach and nutrition, with a strong Apple Watch complication. Subscription.
We name them because people ask, and because the honest answer is that all three do the score. The difference is what happens after it.
Three things to know before you switch
- Wear it to bed. No overnight data, no recovery score. A lot of “the app is broken” posts are a watch on a charger.
- HRV is sampled, not continuous. Apple Watch takes short HRV readings through the night. That makes single nights noisier than a strap. Every app on this list compares you to your own baseline, which is where the value is.
- Battery. Apple Watch needs a daily charge. A strap lasts days. If you hate charging, that is a real reason to keep a WHOOP.
If you also own a WHOOP strap
You do not have to choose. Sixteen reads both: Apple Watch through Apple Health and a WHOOP 4.0 directly over Bluetooth, and it scores from whichever has the better night. See using WHOOP without a subscription.
