Privacy Policy

TsukiLift / Effective: May 2026

Our core policy: TsukiLift stores your health data on your device only, and does not transmit or sync it to any external server or cloud service.

1. Data we collect

The app saves the following data in local storage on your device (SwiftData). This data is never transmitted externally.

  • Period records (start and end dates, flow, pain level, and other self-reported information)
  • Basal body temperature (BBT) records
  • Symptom logs and self-rated energy and mood
  • Workout records (exercise, weight, reps, RPE, and so on)
  • Body composition data (weight, body fat percentage, skeletal muscle mass, and so on)
  • Workout templates and app settings
  • Notes and free text

2. Apple HealthKit integration

The app reads and writes Apple Health (HealthKit) data only when you explicitly grant permission in the settings screen.

  • HealthKit integration is optional. Every feature of the app remains available if you do not grant it.
  • Types of data involved: period records, basal body temperature, weight, sleep duration, and workout records
  • Data read from HealthKit is used only for display and analysis inside the app and is never transmitted externally.
  • HealthKit data remains on your device under Apple's privacy framework.

3. Where data is stored

  • Location: On your iPhone only (local storage via SwiftData)
  • iCloud sync: None
  • External servers: None
  • Data the developer can access: None

4. Sharing with third parties

The app does not provide, sell, or share user data with any third party.

  • Advertising and tracking SDKs: not used
  • Analytics SDKs: not used
  • Crash reporting SDKs: not used
  • Cloud sync (CloudKit and similar): not used

5. Purchases and payment

Billing for Premium features is processed through Apple's StoreKit. The app never handles credit card or payment details directly. For billing enquiries, please contact Apple Support.

6. Managing and deleting your data

You can do all of the following at any time from "Settings → Data Management".

  • Export all data as JSON or CSV (free)
  • Restore from an exported file
  • Delete all data permanently (cannot be undone)

Uninstalling the app also deletes all data stored on your device.

7. Children's privacy

This app is not intended for children under 13. Use by anyone under 13 is not permitted.

8. Changes to this policy

If we change this privacy policy, we will announce it in the app's update release notes.

9. Contact

For questions about this policy, please contact us at the address below.

freetokyo2020@yahoo.co.jp