Contactbook is a simple alternative to the Google contacts app which won't share any information to others. It does use its own database, so everything is saved locally: nothing goes to any cloud, and other apps won't have access. Also for privacy reasons it just uses a minimal set of permissions: CALL_PHONE (so you can call your contacts), and CAMERA (to add contact photos and import contacts via QR codes).
The app was made by Anatoli Schäfer and Marc Zintel and the project was given by Prof. Dr. Manh Tien Tran. The project was a part of the Master degrees of computer science at the Hochschule Kaiserslautern.
- Save contacts with name, numbers, emails and profilepics you can directly take
- Own safe database. Other apps will not access to your contacts
- QR-code scanner to import your contacs and share them to others
- Share your own number to others on a safe way (QR-scan)
- Simple and clear design
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.Download F-Droid
This version requires Android 6.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
directly call phone numbersAllows the app to call phone numbers without your intervention. This may result in unexpected charges or calls. Note that this doesn't allow the app to call emergency numbers. Malicious apps may cost you money by making calls without your confirmation.
take pictures and videosThis app can take pictures and record videos using the camera at any time.