Privacy Policy

Applies to: Pizza Dough Calculator, Epoxy Resin Calculator, Knitting & Crochet Calculator, Film Light Meter: Reciprocity and Hitori: Daily Logic Puzzles. Last updated: 23 October 2026 · Developer: Boris Stiner, Switzerland.

These apps collect no data.

• No account and no sign-in.

• No analytics, no tracking, no advertising and no third-party SDKs.

• No network requests are made by the apps. Everything works offline.

• Your recipes, projects, counters, custom films, game progress and settings are stored only on your device. They are included in your device backup (iCloud or computer) as with any app, under Apple's control, not ours.

• In-app purchases are handled by Apple. We never see your payment details or Apple ID; the app only learns whether "Unlock Pro" has been purchased.

• Film Light Meter uses the camera only to measure how bright the scene is (it reads the camera's exposure settings). No photo or video is taken, stored or sent. Camera access is asked for with the standard iOS prompt; you can turn it off any time in Settings > Privacy & Security > Camera, and still enter metered times by hand.

• Film Light Meter can show a local notification when an exposure timer ends. The notification is scheduled on your device and nothing is sent anywhere.

• Keeping and deleting your data: your data stays on your device until you delete it in the app or delete the app, which removes all of it. Because we never receive any data, there is nothing for us to keep, share or delete on a server.

The App Store privacy label for every app is Data Not Collected.

If you have questions, contact: boris.stiner@gmail.com