In short: Delay Grain collects nothing and sends nothing anywhere. There is no account, no server, no analytics and no advertising. Every rocket, motor, flight and photo you enter stays only on your own device.
What the app stores, and where
Delay Grain is a flight book and fleet register for hobby model rocketeers. It works fully offline. The data you enter is written only to local storage on your device:
| Data | Where it lives | Leaves the device? |
|---|---|---|
| Rockets, motors, flights, repair logs, sessions | A local database inside the app's own container | Never |
| Photos you attach to a rocket | The app's local storage | Never |
| Preferences (units, appearance, haptics, sound, checklist items) | Local device preferences (UserDefaults) | Never |
| Launch-eve reminder time, if you turn it on | A local notification scheduled on your device | Never |
Camera and photo library
If you choose to add a photo to a rocket's card, Delay Grain asks for either camera access or photo library access at that moment, with a clear explanation of why. The resulting photo is saved only inside the app's own local storage. It is never uploaded, shared automatically, or used for anything beyond showing it back to you on that rocket's card.
Notifications
If you switch on the launch-eve reminder, Delay Grain asks for notification permission at that point and schedules a single local notification on your device. No push notification service, and no external server, is involved.
What Delay Grain does not do
- No account, sign-in, or user profile of any kind.
- No network requests, no cloud sync, no backend server.
- No analytics, crash reporting, or advertising SDKs.
- No tracking of you or your device across apps or websites.
- No sale or sharing of any data, because no data ever leaves your device.
- No location data of any kind is collected.
Children's privacy
Delay Grain does not knowingly collect information from anyone, including children, because it does not collect information at all.
Deleting your data
Because everything lives only on your device, deleting the app deletes all of its data with it. Within the app, individual rockets, motors, flights and photos can be deleted at any time, and Settings offers a full reset to the starter content.
Changes to this policy
If this policy changes, the update will be posted on this page with a new "last updated" date.
Contact
Questions about this policy can be sent through the support page's contact form.