Last updated: August 2026
Summary
SparkCalc is a local-first calculator app. It does not collect, store, or transmit any personal information, and it works entirely offline.
Data collection
- No accounts. SparkCalc does not require or use sign-in, and has no server-side component.
- No personal data. The app does not collect names, email addresses, locations, or device identifiers.
- No analytics. No analytics or crash-reporting SDKs are included.
Local data
The app stores only local data on your device:
- Calculation history — the list of calculations you choose to save via "Copy & save". This never leaves your device and can be cleared at any time from the History screen.
- Settings — your theme preference (System/Light/Dark) and whether ads have been removed. Stored locally in the app's private storage.
Advertising
SparkCalc is free with advertising served by Google AdMob. AdMob is Google's advertising service; it may collect device identifiers and use advertising ID data to serve and measure ads, in accordance with Google's Privacy Policy. You can reset or limit the advertising ID on your device (Android Settings → Privacy → Ads).
Purchases
Removing ads uses Google Play Billing. Google processes the payment; SparkCalc itself receives no payment details. The purchase state is stored locally on your device and via your Google Play account (for restore on reinstalls).
Children
The app is a general utility and is not directed at children. It contains no user-generated content.
Changes
This policy may be updated as the app evolves; the current version will always be linked from the Play Store listing.
Feedback
The Feedback screen lets users send feedback or feature requests. The message is composed on-device and sent through the user's own email app (a mailto: link) — SparkCalc itself never transmits or stores it. The email includes the app version and device model so reports are actionable. Users provide a contact email only if they choose to.
This means: no feedback data is collected by SparkCalc; we only receive what a user voluntarily sends to the support inbox.
Contact: thedevdaemon@protonmail.com