Birthday Adapter is an open-source (GPL-3.0-only) Android app by Matthias Heinisch & Dominik Schürmann. The APK we host is 3.1 MB, it needs Android 9 or newer, and it declares 13 permissions.
The file on this page is Birthday Adapter 3.13.7, 3.12 MB, and it installs on Android 9 and newer.
We compared the signing certificate of this build with the certificate recorded the first time org.birthdayadapter entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest declares 13 permissions, including access to your contacts. Android asks you to approve those the first time the app needs them.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 3.13.7
- Size
- 3.12 MB
- Requires Android
- API 28
- Package
- org.birthdayadapter
- Signature checked on
- Sep 18, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: 542aa6f1184da9d5982c1d151facb1698e66faecd5d86a6a50fe8ed589c864ae
Signing certificate (SHA-256): b4d50046259eb0c5cf0f6a2ebbf9db465e6e55962c36a5225fc88e33e6fc3d46
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- FOREGROUND_SERVICE
- GET_ACCOUNTS
- MANAGE_ACCOUNTS
- READ_SYNC_SETTINGS
- WRITE_SYNC_SETTINGS
- READ_CONTACTS
- READ_CALENDAR
- WRITE_CALENDAR
- READ_SYNC_STATS
- REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
- WAKE_LOCK
- RECEIVE_BOOT_COMPLETED
- org.birthdayadapter.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Screenshots
