Privacy Policy
Effective 14 August 2026
What is collected
Nothing you enter. Every calculation runs on the device, and no input, result or export is transmitted anywhere. There is no account, no sign-in and no user profile.
What is stored
Your settings — the selected code edition, the theme, and your most recent inputs so a calculator reopens where you left it. All of it stays in the app’s own storage on this device and is removed when the app is uninstalled.
Crash reports
If the app crashes, a technical report may be sent to Sentry, our crash-reporting provider, to help fix the fault. It contains the error and the device model and OS version. It never contains what you typed: input and touch breadcrumbs are dropped before sending, screenshots are disabled, and no user identifier is attached.
Purchases
The one-time unlock is processed by the App Store or Google Play and verified through RevenueCat. We receive whether the purchase is active — never your name, payment details or billing address, which the store keeps and does not share with us.
Analytics and advertising
There are none. No third-party analytics, no advertising SDK and no tracking of any kind.
Children
The app is a professional tool and is not directed at children. It collects no personal information from anyone, of any age.
Changes and contact
Any change to this policy ships with an app update and is dated in the release notes. Questions, corrections and data requests: support@neccalc.app.
Contact
Questions, corrections, or a result that looks wrong. The last one especially. support@neccalc.app