CalcKit Privacy Policy
Last updated: 2026-04-15
1. Who We Are
CalcKit is a local-first calculator and simulation toolkit for iOS.
2. Data Stored on Device
To provide core features, CalcKit stores data locally on your device:
- favorites and recents
- countdown items
- custom unit conversion rules
- search history
- theme and language preferences
- exchange-rate cache (fallback only)
- optional hub background image file (app sandbox), if you set one in Settings
2.1 Photos and Camera (optional)
If you choose to personalize the calculator hub, CalcKit may ask for photo library access to pick an image, or camera access to capture one. The chosen image is kept on your device (app sandbox) for display behind the hub. If you export a form calculator screen as an image to your Photos library, CalcKit may ask for permission to add images to your library. You can decline; core calculators still work offline without these features.
3. Network Usage
Most functions work offline. CalcKit may connect to app service endpoints on startup/resume to fetch app configuration and availability settings. These requests may include technical app/device fields such as app version, OS version, screen resolution, and device identifier for request validation and service compatibility.
When you tap Fetch Live Rate, CalcKit requests exchange-rate data from frankfurter.app. No account registration is required for core app usage.
4. Sharing
Some pages allow sharing text summaries or generated images through the system share sheet. Saving an exported form calculator screen to your Photos library uses Apple’s photo APIs and stores the image only when you confirm the action.
5. Children
CalcKit is a general utility app and does not intentionally collect personal data from children.
6. Data Retention and Deletion
Stored app data remains on your device until you clear it in-app (where available) or uninstall the app.
7. Policy Updates
We may update this policy from time to time. The latest version is published on our website and can be updated in-app.
8. Contact
If you have any privacy-related questions, contact: chentuan7963+calckit@gmail.com