Recovery needs overnight HRV and heart rate from Apple Health, plus enough measured nights to build your baseline. Work through these causes in order. The first two explain most missing or strange scores.
Settings is reached from the avatar on Today, then the gear on You.
011. Your baseline is still filling
Titan scores each night against your measured nights, the nights with both overnight HRV and a sleeping heart rate. The baseline needs at least 7 of them, covering at least 25% of the Recovery window. On the default 60-night window that is 15 measured nights.
Until then, Today has no Recovery score. Tapping the card shows "Building your baseline", and the Recovery screen reads "Not enough nights for a baseline". Titan reads the history already in Apple Health, so this wait only applies when Health has few nights of overnight data. Wear your watch to bed and the score appears once enough nights are recorded. Personal baselines explains the rule.
022. Last night had no overnight readings
Recovery reads HRV and heart rate during your main sleep session. With no sleep session, it reads 10 PM to 10 AM instead. When Health has no heart rate at all for the night, tapping the Recovery card shows "No recovery data" with a Check Health access button.
Wear your watch to bed, with enough charge to last the night. Then check that Titan can read Heart Rate, Heart Rate Variability and Sleep. In the Health app, tap your profile picture, then Apps, then Titan. The Health Permissions row at Settings > Health & Connected Apps opens iOS Settings for Titan. See Health permissions. If HRV itself is the gap, see HRV not showing.
033. The score says Estimated
An estimated score means last night was incomplete. The line under the ring on the Recovery screen names the reason, such as "Estimated · No HRV recorded overnight" or "Estimated · Partial night". Titan fills the gap from your recent measured nights, so an estimate follows your usual level more closely than a measured score does. How the Recovery score works explains each reason.
Frequent estimates usually mean the watch missed HRV during sleep, or sleep came from a different device than your heart data. Check that Sleep Tracker at Settings > Recovery & Sleep names the device you wear to bed.
044. The score changed this morning
A night's score can change until noon on the day you woke up, as late readings sync from your watch. From noon on it stays fixed. A score that moved before noon picked up readings that arrived late.
055. You limited your sources or switched to RMSSD
Settings > Health & Connected Apps has a row for each metric. If HRV or Heart Rate shows a device name or a count instead of All Sources, Titan reads only the sources you allowed. A new watch stays excluded until you allow it. Open the row and tap Reset to All Sources.
Use RMSSD for HRV, at Settings > Recovery & Sleep, calculates HRV from beat-to-beat data and needs the Heartbeat Series permission in Apple Health. Without it, HRV and Recovery go blank. Titan rebuilds Recovery history on its own when you switch methods.
066. Past scores look stale
Open Settings > Health & Connected Apps and tap Clear Recovery Cache under Targeted Clears. Titan recalculates Recovery, Sleep, Stress and Battery from Apple Health for the last 60 to 180 days, scaled to the Number of Workouts setting on the Your Training screen. Past scores may change. Run Full Resync on the same screen if more than Recovery looks off. Resync and history explains both options.
If the score still looks wrong, send details through the contact page.
