Android application is in development and it will be soon released
To install it you must be in one of the following G+ communities:
Then visit this link on your Android device - https://play.google.com/apps/testing/io.timetrack.timetrackapp
New features already available:
NO update for Android devices？
There was invalid link in this post. Please check it one more time - last update was couple of weeks ago
Thanks, it worked,it is really a nice app.