diff --git a/README.md b/README.md
index 895b157e..30e14864 100644
--- a/README.md
+++ b/README.md
@@ -5,12 +5,22 @@
 
 Ultrasonic is free and open-source music streaming Android client for [Subsonic](http://www.subsonic.org/) [API](http://www.subsonic.org/pages/api.jsp) (version 1.7.0 or higher) compatible servers.
 
+## Help wanted
+
+We currently don't have that much time to spend developing Subsonic, so any
+contributions or active developers are always welcomed.
+
 ## Download
 
 App is available to download at following stores:
 
 [<img src="https://play.google.com/intl/en_us/badges/images/generic/en-play-badge.png" alt="Get it on Google Play" height="70">](https://play.google.com/store/apps/details?id=org.moire.ultrasonic)
 [<img src="https://f-droid.org/badge/get-it-on.png" alt="Get it on F-Droid" height="70">](https://f-droid.org/packages/org.moire.ultrasonic/)
+[<img src="https://ultrasonic.github.io/assets/img/get-it-on-github.png" alt="Get it on GitHub" height="70">](https://github.com/ultrasonic/ultrasonic/releases)
+
+**Warning**: All three versions (Google Play, F-Droid and the APKs) are not
+compatible (not signed by the same key)! You must uninstall one to install
+the other, which will delete all your data.
 
 ## Bugs and issues