Titan reads Whoop data through Apple Health. Whoop can supply your sleep, workouts, heart rate and resting heart rate, and you can pick Whoop as the source for each of those metrics inside Titan. Titan runs on iPhone with iOS 26 or later.
01How Whoop data reaches Titan
Whoop has no direct connection to Titan today. In Settings > Health & Connected Apps, Whoop is listed under Coming Soon. Until then, the Whoop app writes its data to Apple Health, and Titan reads it from there.
02Data Whoop writes to Apple Health
Once you turn on the Apple Health connection in the Whoop app, it can write these data types.
- Workouts, including auto-detected running, cycling, and strength sessions
- Active energy burned during activity
- Heart rate across sleep, workouts, and the rest of the day
- Sleep, with duration and stages
- Resting heart rate
- Respiratory rate, usually captured during sleep
- Blood oxygen, usually captured during sleep
- Steps, if you turn them on in Whoop settings
03Data Whoop does not write
Whoop does not write heart rate variability to Apple Health. Whoop measures HRV as RMSSD, and Apple Health stores HRV as SDNN. Whoop also keeps ECG and Blood Pressure Insights out of Apple Health for regulatory reasons, and it does not export meditation or stretching sessions.
04What Whoop data powers in Titan
Several Titan scores depend on HRV. If Whoop is your only device, those scores stay empty.
| Titan score | Needs HRV | Works with Whoop data alone |
|---|---|---|
| Recovery | Yes | No |
| Stress | Yes | No |
| Battery | Yes | No |
| Sleep | No | Yes |
| Exertion | No | Yes |
| Net Energy | No | Yes |
Recovery compares your overnight HRV and sleeping heart rate with your usual values. It builds those usual values only from nights that have HRV, so Whoop heart rate alone never gives it a starting point. Stress compares your heart rate and HRV through the day with 60-day baselines of your daily HRV and resting heart rate. Battery charges and drains from the same comparison. Titan needs HRV for all three, so heart rate and resting heart rate from Whoop cannot produce them on their own.
Sleep uses your duration and stages. Exertion uses your workouts, your heart rate, and your time in heart-rate zones. Net Energy counts your active energy. Resting heart rate, respiratory rate, and blood oxygen from Whoop appear in Vitals, and Whoop steps count toward your step goal.
To get Recovery, Stress, and Battery, wear a device that writes HRV to Apple Health, such as Apple Watch, alongside your Whoop. See HRV not showing for more.
05Set up Whoop and Apple Health
- In the Whoop app, open More > App Settings > Integrations > Apple Health > Connect. Tap Turn on all or pick categories, then tap Allow.
- On your iPhone, open Settings > Health > Data Access & Devices > Whoop and turn on the categories you want Whoop to write.
- Open Settings > Health > Data Access & Devices > Titan on your iPhone and allow Titan to read workouts, heart rate, sleep, resting heart rate, respiratory rate, blood oxygen, steps, and active energy.
Whoop writes to Apple Health after it logs an activity or sleep. Keep the Whoop app updated and turn on Background App Refresh for Whoop and Titan in Settings > General > Background App Refresh.
06Choose Whoop as a source in Titan
If you wear Whoop with another device, both may write the same metric. Titan lets you pick sources per metric. Tap your avatar on Today, then open You > Settings > Health & Connected Apps.
The Apple Health card lists Sleep, Workouts, HRV, Resting Heart Rate, Heart Rate, Steps, Active Energy, Exercise Minutes, Stand Hours, and Mindful Minutes. Tap a metric to change three settings.
- Primary Source sets the device Titan prefers. Automatic is the default.
- Allowed Sources turns individual apps and devices on or off for that metric.
- Duplicate Handling picks between Prefer Primary, Most Recent, and Highest Quality when two sources overlap.
Reset to All Sources returns the metric to its default. Whoop appears in these lists after it has written data for that metric in the last 30 days.
Sleep has a simpler option. Settings > Recovery & Sleep > Sleep Tracker lists every app and device that has saved sleep to Apple Health, so Whoop appears there once it has written a night. Pick Whoop and Titan reads your Whoop sleep first, then fills any night Whoop missed from your other sources. If you set sources for Sleep in Health & Connected Apps instead, Titan uses that choice and ignores Sleep Tracker. The sleep source article compares the two.
07Duplicates and differences
If Whoop both imports workouts from Apple Health and exports them back, Apple Health can show each workout twice. Turn off Workouts for Whoop in the Health app under Sources > Whoop, or allow a single workout source in Titan.
Whoop calculates calories and activity with its own methods, so its numbers can differ from Apple Watch for the same day.
08Remove Whoop data
To delete Whoop data from Apple Health, open the Health app, go to Sources > Whoop, and tap Delete All Data. For help, reach us through the contact page.
