The Q1.6 app is fairly small, about 17MB both for iOS and Android.
The Q1.6 app works on a tablet but if you want to have as many answers as possible, we suggest to prevent users from installing the app on a tablet, because people use their tablet less frequent than their smart phone.
It is possible to install the app twice with the same activation code. This is useful if someone has a new phone or there is a problem and the user wants to uninstall and install the app again.
But if the user installs the app on two different devices with the same activation code, the user will get the questions twice.
In this case it is best to ask the user to uninstall one of the apps.