Hi Zappy,
I checked, and there doesn't seem to be any specific mention of an Android operating system that the Invoices app won't install on. Most Android apps are generally backwards compatible, so it should work on later versions of Android. However, there is a chance that the Invoices app might crash if run on a 64-bit processor.
Aside from using an older device to access the application, I also recommend manually downloading and installing the installer instead of going through the Google Play Store and installing it from there.
Let us know if you need any other help.
Thanks,
Genreve