Now we are considering adding the similar Smart app banner to show the link to Piwik Mobile on Android devices. We could use for this purpose this Jquery plugin: http://jasny.github.io/jquery.smartbanner/
Once this ticket is implemented, Android users will see a mention to install Piwik Mobile on their android devices. This will help gain users to the Mobile app and provide a better mobile experience!
This was implemented. Hope it works well (if anyone can test on android device on the login page of Piwik)