I'm trying to play the same my colony game save I have on my android on my chromebook and still have them connected so I could play on one or the other, so when I'm on the go I can play on my phone but at home on my computer and continue where I left off on either.
Trying to do that to, except with PC and Chromebook. Maybe just back it up to a flash (you can get an adapter for Android) or micro SD (can get an adapter for Chromebook).
At the moment I don't believe there is a cloud sync so manual backup/transfers will have to happen to play on both- or use a device like a flash drive that either can access.