Last Updated: October 27, 2026
Adding Machine ("the App") is a calculator app developed by WittyApps. This policy explains how the App handles your information.
None. The App does not include analytics, crash-reporting or advertising SDKs, and it does not send your calculations or tape history anywhere. Everything you enter is stored only on your device.
The optional Pro purchase is processed by the Apple App Store or Google Play. The store confirms the purchase to the App; we do not receive your payment details. Purchase records are kept by Apple or Google under their own policies.
The App uses no other third-party services.
Your tape history and settings stay on your device until you delete them or uninstall the App, at which point they are removed. We keep no copy on any server.
You can delete your tape history in the App at any time, or remove all App data by clearing the App's data or uninstalling the App.
The App does not collect personal information from anyone, including children under 13.
If a future version of the App changes how data is handled, this policy will be updated and the "Last Updated" date revised before that version is released.