This privacy policy applies to the Android app Birthdays (package name de.aaron.birthdays), distributed through Google Play and GitHub. The privacy policy of aaron.de applies to this website.
1. Controller
Aaron Kreis
Parkstr. 30
40477 Düsseldorf, Germany
Email: info@aaron.de
2. In short
Birthdays does not collect any data. Everything you enter stays on your phone. The app has no internet access, so Android itself prevents the app from sending data. I receive no data from you through the app.
3. What the app stores on the phone
The app stores what you enter in a database on the phone: names, birthdays, notes, photos, groups, reminders and settings. This data lives in the app’s protected storage. Other apps cannot read it. Android’s automatic backup to Google’s cloud is turned off for the app.
When you uninstall the app, Android deletes all of this data.
4. Permissions
The app asks for a permission only when it needs it.
- Contacts (read only): when you import birthdays from your contacts or use a contact’s photo for an entry. The app only takes contacts that have a birthday: name, birthday, photo and the contact’s ID, so a second import does not create anyone twice. The app does not change your contacts.
- Camera: when you take a photo for an entry. The photo stays in the app.
- Notifications, exact time, full screen, vibration, start after boot: so reminders appear at the set time, even when the app is closed or the phone was restarted.
You pick a picture from the gallery through Android’s photo picker. The app receives only that one picture and needs no storage access.
5. Backup and sharing
A backup file is created only when you create it in the app yourself. You decide where it goes in Android’s share menu, for example an email or a cloud storage of your choice. The privacy policy of the service you pick there applies to that step.
6. No ads, no tracking
The app contains no ads, no analytics and no third party components that collect usage data. The links to aaron.de and GitHub in the settings open the phone’s browser. The app itself loads nothing.
7. Google Play
If you install the app through Google Play, Google processes data according to Google’s privacy policy. If you allowed your phone to send diagnostic data to Google, Google shows me aggregated figures in the Play Console, such as how often the app was installed and how often it crashed. These do not tell me who you are, and I see no content from the app.
8. Children
The app is not directed at children.
9. Your rights
Since I receive no data from you through the app, I cannot hand out, correct or delete any. You can change or delete your data in the app at any time yourself. For questions, write to info@aaron.de. You may also lodge a complaint with a data protection supervisory authority (Art. 77 GDPR). The authority responsible for me is the State Commissioner for Data Protection and Freedom of Information of North Rhine-Westphalia, Kavalleriestraße 2-4, 40213 Düsseldorf, Germany.
10. Changes
If the app changes in a way that makes this policy inaccurate, I will update it. The date below shows the current version.
Last updated: November 10, 2026.