Uninstalled App Notification ?

Hi,

is there a way to know for andoid or iOS, when someone uninstall my APP ?

The solution i have so far, is a database timestamp for the last time app opened... and clean database for apps that are not oppened for ... a period of time...

But i would rather, check with apple // android if app is installed or receive a notification on server uninstal...

Is there any way of doing this ?

Thanks,

Gonçalo