Last updated: May 1, 2026
100 Percent Calculator is a calculator app. It does not require an account, does not connect to any of our servers, and does not collect personal information. Everything you enter into a calculation lives only on your device for as long as that calculation is on screen.
The app stores a small amount of data locally so it can remember your preferences between launches:
This data is stored on your device using standard Apple APIs (UserDefaults). It is not transmitted to us and not shared with third parties.
The app does not include any analytics SDKs, advertising frameworks, or tracking tools. There are no cookies, no third-party scripts, and no behavioral data collection.
100 Percent Calculator offers an optional one-time "Pro" upgrade and three optional tip jar items. Purchases are processed by Apple through StoreKit. We never see your payment details, your Apple ID, or your billing information. Apple's privacy policy applies to purchase data: apple.com/legal/privacy.
After a successful purchase, the app records a small flag locally so it knows the upgrade is unlocked. To restore purchases on a new device, use the "Restore Purchases" option in Settings — this re-checks your Apple ID with the App Store.
Because nothing is stored off-device, deleting the app from your device removes all of its locally stored data. There is nothing for us to delete on your behalf.
100 Percent Calculator is suitable for all ages and does not knowingly collect personal information from children under 13. No registration, identifiers, or personal data are collected from anyone.
If this policy changes, the updated version will be posted on this page with a new date. Continued use of the app after changes constitutes acceptance of the updated policy.
Questions about this policy? Email support@thomasaj.com.