Your projects, estimates, measurements, prices and presets are stored only on this device. Calculations work fully offline. "Export all data" produces a file you choose to share — it is never uploaded.
Nothing is collected without your consent. If you turn analytics on, the app logs event types only — for example "calculation completed" or "estimate saved" — never your measurements, names, prices, notes or purchase lists. You can turn it off at any time in Settings → Privacy.
The free tier may show a single clearly-labeled ad below a project's purchase list. Ads are served by Google AdMob, which may use a device advertising ID and its own consent settings (see "Privacy options" in Settings when available). Ads are removed with Pro and are never shown inside a calculation flow or next to safety notes.
Pro is a one-time purchase handled by your app store (Google Play). The store processes the payment; this app only records whether the entitlement is active. No card details ever touch the app.
If you consented to analytics, crash reports contain the error type and redacted stack frames only — no message text, paths, or any of your data. They are sent nowhere else and nothing is collected when analytics is off.
All app data lives on your device. You can delete everything at any time in Settings, or by uninstalling the app. No server-side copy exists.
Questions or deletion requests: abdquddos@gmail.com