Titan builds every score from Apple Health, so the first thing it asks for is Health access.
01Granting Health access
For the full path from your watch or tracker to your Titan scores, see Set up Apple Health for Titan.
The request appears on the Connect Apple Health step of setup when you tap Connect Apple Health. iOS shows one sheet with a switch for every type. Titan asks once. After that, iOS keeps your choices and Titan cannot show the sheet again.
iOS never tells an app which read types you turned off. A type you declined looks the same to Titan as a type with no data. A blank score usually means a switch is off or no device recorded that data.
02Health data and Titan features
The names below match the labels on the iOS permission sheet.
| Health data type | What it powers in Titan |
|---|---|
| Heart Rate Variability | Recovery, Stress, Battery, and Vitals |
| Resting Heart Rate | Stress, Battery, Vitals, and Titan Age |
| Heartbeat Series | HRV when Use RMSSD for HRV is on |
| Heart Rate | Sleeping heart rate for Recovery, Stress, Battery, Exertion, and heart rate zones |
| Sleep | Sleep score, sleep debt, sleep consistency, and the night Recovery scores |
| Respiratory Rate, Blood Oxygen | Vitals and You > Your Fitness |
| Workouts | Workouts, Exertion, training load, and Titan Age |
| Cycling Cadence, Cycling Power, Running Power | Charts on a workout's detail screen |
| Walking + Running, Cycling, and Swimming Distance | Workout distance |
| Steps, Stand Hours | Steps and Titan Age |
| Active Energy, Resting Energy | Energy burned and Net Energy |
| Dietary Energy, Carbohydrates, Protein, Total Fat | Energy consumed and macros |
| Cardio Fitness | Titan Age and You > Your Fitness |
| Cardio Recovery | Titan Age and the heart rate recovery chart in Trends |
| Weight, Height, Body Fat Percentage | Titan Age lean mass, BMI, and Body & Measurements |
| Walking Speed | You > Your Fitness |
| State of Mind | Mood in Trends and on You |
| Date of Birth | Titan Age and your age-based maximum heart rate |
| Sex, Blood Type, Fitzpatrick Skin Type | Health Details on your profile |
| Mindful Minutes | Read with your other Health data. No score depends on it |
| Body Temperature, AFib History | Also on the list Titan requests |
You can turn off any type and the features that use other types keep working.
03What Titan writes to Health
The sheet also has a section for data Titan can write to Health. Titan writes in two cases.
The first is the direct Oura connection. Nothing is written until you connect Oura. Write Oura data to Apple Health is on by default, and with it on, Titan copies your Oura sleep, HRV, heart rate, steps, active energy, mindful sessions, and workouts into Apple Health so every score can use them. Before each sync, Titan deletes only the Oura records it wrote earlier in that date range. It never changes data from your Apple Watch or other apps. See Oura direct connection for setup.
The second is a reading you add by hand. Add Reading on the Vitals screen, and the Add Vital and Log Weight quick actions on the Titan icon, save HRV, resting heart rate, respiratory rate, blood oxygen, or weight to Apple Health with the time you pick. If write access for that type is off, the sheet asks you to allow it in Settings > Health > Data Access & Devices > Titan.
The write list also names resting energy, which Titan does not write. If you never connect Oura or add readings by hand, you can turn off every write switch and your scores stay the same.
04How Titan uses your date of birth
Titan Age starts from your calendar age and adjusts it up or down with your weekly signals. Without a date of birth in Health, Titan Age cannot be calculated. Heart rate zones use 220 minus your age as a floor for your maximum heart rate. Without an age, Titan uses only the highest heart rate from your last 30 days. To set a fixed number, tap your avatar on Today, then open You > Your Training and turn on Use Custom Max Heart Rate.
To add or fix your birth date, open the Health app, tap your profile picture, then Health Details. Titan keeps the date it read for up to seven days, so a corrected date can take that long to reach Titan Age.
05Change Health permissions
In Titan, tap the avatar on Today, then You > Settings > Health & Connected Apps > Health Permissions. That row opens the iOS Settings app. You can also go straight to the controls.
- Open the Health app.
- Tap your profile picture.
- Under Privacy, tap Apps, then Titan.
- Turn each type on or off.
The same list is at iOS Settings > Privacy & Security > Health > Titan. Changes apply the next time Titan reads Health. If a score stays blank after you allow a type, see health access needed. To choose which device supplies each metric, see data sources.
