Titan reads your health data from Apple Health, so any device or app that writes to Apple Health can feed it. Apple Watch, Oura, and Whoop each supply a different set of data, and that set decides which Titan scores each device can power.
Titan runs on iPhone with iOS 26 or later. You reach Settings from the avatar on Today, then You > Settings.
01What each device writes
Apple Watch writes every type Titan scores with. Oura reaches Titan two ways, through the Oura app's Apple Health export or through Titan's direct connection to your Oura account.
| Data | Apple Watch | Oura app | Oura direct | Whoop app |
|---|---|---|---|---|
| HRV | Yes | No | Yes | No |
| Resting heart rate | Yes | No | No | Yes |
| Heart rate | Yes | Yes | Yes | Yes |
| Sleep duration | Yes | Yes | Yes | Yes |
| Sleep stages | Yes | Yes | No | Yes |
| Workouts | Yes | Yes | Yes | Yes |
| Steps | Yes | Yes | Yes | Optional |
| Active energy | Yes | Yes | Yes | Yes |
| Mindful minutes | Yes | Yes | Yes | No |
Whoop writes steps only if you turn them on in the Whoop app. The Oura direct connection writes steps and active energy as one total per day.
02Which scores each device can power
Recovery compares your overnight HRV and sleeping heart rate with your usual values. It builds those values from nights that have both, and needs at least 7 of them before a score appears. Stress compares your heart rate and HRV through the day with 60-day baselines of daily HRV and resting heart rate. Battery charges and drains from the same comparison, so it needs the same baselines. Sleep scores duration against your goal and adds Deep, REM, and awake time when your device records stages. With duration alone, Titan gives a simpler score. Exertion uses your workouts, heart rate, and time in heart-rate zones.
| Titan score | Apple Watch | Oura app | Oura direct | Whoop app |
|---|---|---|---|---|
| Recovery | Yes | No | Yes | No |
| Stress | Yes | No | Needs resting HR | No |
| Battery | Yes | No | Needs resting HR | No |
| Sleep | Yes | Yes | Duration only | Yes |
| Exertion | Yes | Yes | Yes | Yes |
Titan reads each metric on its own, so two devices can fill each other's gaps. Oura direct supplies HRV and Whoop supplies resting heart rate, and together they give Stress and Battery both baselines.
Net Energy counts Burned as active energy plus resting energy. Neither Oura route writes resting energy, so Burned leaves it out when Oura is your only source. Titan Age uses stand hours, cardio fitness, and heart-rate recovery, which come from Apple Watch. Without an Apple Watch, those contributors have no readings.
03The direct Oura connection
Open Settings > Health & Connected Apps and tap Oura under Integrations. Paste an Oura Personal Access Token and tap Connect Oura. Titan stores the token in the iPhone Keychain and writes your Oura records into Apple Health, tagged as Oura.
The first sync covers the last 30 days. Later syncs start 7 days before the previous one and replace the Oura records Titan wrote in that range. Sync runs only when you connect, turn on Write Oura data to Apple Health, or tap Sync Now. Disconnect Oura deletes the token and removes Oura as a source for every metric. The Oura direct connection article covers each step.
04Coming soon
Settings > Health & Connected Apps lists four providers under Coming Soon: Strava, TrainingPeaks, Garmin Connect, and Whoop. Until each one ships, connect it to Apple Health from its own app. Titan reads whatever it writes there, and you can choose it as a source per metric.
05Supported sleep sources
Titan can take sleep from any app or device that saves sleep to Apple Health. Set yours at Settings > Recovery & Sleep > Sleep Tracker. The list names every source that has saved sleep to Health, such as your Apple Watch, the Oura app, Whoop, AutoSleep, or Pillow.
Titan reads sleep from the tracker you pick first. For any night that tracker missed, Titan fills in from your other sources. The sleep source article covers each case.
06Choosing sources inside Titan
Open Settings > Health & Connected Apps. Each metric on the Apple Health card has its own page. The card lists Sleep, Workouts, HRV, Resting Heart Rate, Heart Rate, Steps, Active Energy, Exercise Minutes, Stand Hours, and Mindful Minutes.
- Primary Source picks one source, or Automatic. A primary source is always allowed.
- Allowed Sources limits Titan to the sources you turn on for that metric.
- Duplicate Handling sets which reading Titan keeps when two sources overlap.
- Reset to All Sources clears your choices, and Titan uses every source again.
Use Allowed Sources when two devices record the same thing, such as steps from Apple Watch and Oura, so Titan reads one copy. Once you set allowed sources for Sleep, Titan ignores the Sleep Tracker setting. A source appears on a metric's page after it writes that type to Apple Health.
To change which data Titan may read at all, open Settings > Health & Connected Apps > Health Permissions. The data sources article covers each control.
