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CAdroid is intended to assist you in importing your own CA or self-signed certificate to your Android device.

This app is not required to use self-signed or custom certificates with DAVdroid!

News, updates and more info: CAdroid forum


How does it work?

After you enter the host name of your HTTPS site, the certificate chain will be fetched and you can select the root certificate to import. Possible import issues will be detected and displayed.

As soon as you have verified the certificate by its details and fingerprints, it will be exported into a .crt file. You can then simply import the certificate from the file with a few clicks.

When the certificate was imported correctly, it will be accepted in (nearly) all apps, including DAVdroid and the Android email app (don’t choose “Accept all certificates” there).


As this software is free and open-source software, we’re asking for donations. Please see for details.

Further info

For more information and discussion, see our CAdroid forum.

Copyright (c) 2013 – 2015 Ricki Hirner (bitfire web engineering). All rights reserved. This program and the accompanying materials are made available under the terms of the GNU Public License v3.0 which accompanies this distribution, and is available at