Import menstrual cycle history from Apple Health into Red Tent. Open Settings → Your Data → Import Data → Apple Health, allow period-flow read access, review the preview, then tap Import Periods to merge into your cycles.
What Apple Health import reads
- Reads menstrual flow samples only—not symptoms, medications, or other Health categories.
- Lookback window is 730 days from the fetch date.
- Red Tent does not write data back to Apple Health.
- Imported periods become period records on this device; existing cycles are preserved.
- Cycles with the same start date are updated; new periods are merged in.
Open Apple Health from Settings
01
Settings
On Home, tap the gear in the date header to open Settings.
02
Your Data
Under Data Management, tap Your Data.
03
Import Data
Tap Import Data to open the import hub. See Import your data for hub overview and the CSV import path.
04
Apple Health row
On the Import Data hub, tap Apple Health (subtitle Import menstrual cycle history from period flow data) to open the Apple Health import screen.
Connect Apple Health
01
Apple Health
Under the navigation title, read the instruction paragraph explaining that Red Tent reads period flow data to build or update your cycle history.
02
Privacy note
Health data stays in your private iCloud. This note also states that Red Tent reads menstrual flow data from Apple Health.
03
Connect Apple Health
Tap Connect Apple Health to start authorization. If HealthKit is unavailable on this device, the button is replaced by Apple Health is not available on this device.
04
Menstrual Flow
When iOS shows the Health permission sheet, allow Red Tent PMDD to read Menstrual Flow. Denying read access may later show We couldn't find period data in Apple Health.
05
Connecting to Apple Health…
A progress row appears while authorization runs.
06
Importing periods…
After access is granted, a progress row appears while flow samples from the last 730 days are fetched.
Review the import preview
01
Import Preview
When fetch completes, the Import Preview section lists what Red Tent detected.
02
periods found
The count shows how many period spans were detected in Apple Health.
03
months
The coverage stat shows how many months of history the preview spans.
04
Period row
Each row under the stats shows a start–end date range for one detected period.
05
Merge policy
Below Import Periods, a note explains that existing cycles are preserved, new periods merge in, and cycles with the same start date are updated.
06
Import Periods
Tap Import Periods to confirm and merge the preview into your cycle history on this device.
After you confirm import
01
Import Complete
On success, Import Complete appears with a message like Imported 3 cycle(s) from Apple Health. The cycle count may differ from periods found in the preview.
02
Import More Data
Tap Import More Data to run another import pass from Apple Health.
03
Import Failed
If import fails, Import Failed appears with Try Again to retry the flow.
04
Back
Use the back chevrons to return to the Import Data hub, Your Data, Settings, and Home.
If import does not work
- Apple Health is not available on this device — shown when HealthKit is unavailable; common on the simulator.
- Could not connect to Apple Health — authorization failed after a connect attempt.
- We couldn't find period data in Apple Health — no flow samples in the lookback window; may also appear when Menstrual Flow read was denied.
- To restore read access: iOS Settings → Health → Data Access & Devices → Red Tent PMDD → enable Menstrual Flow.
- No signed-in user. Please sign in and try again. — sign in with your Apple ID, then retry import.
✦After import, open Home and confirm period arcs and next-event estimates reflect your merged history. See the Home cycle tracker help article if something looks off.
🔒Imported cycle data stays on this device and syncs privately through iCloud. This import flow does not send health data to Red Tent servers. See the privacy overview help article for iCloud and research boundaries.