Put es file explorer app on old phone and on new phone
Back up app in es file explorer on old phone and use computer and appropriate cable to move it to new phone
then restore the app on from es file explorer.on new phone
I'm not sure if the maps will come over but it is worth a try.
This is also a work around "Amazon's" store to get apps on Kindles if they aren't available from amazon if you can get the apk file one way or the other.