Thanks so much, I'm glad you're enjoying it! I actually am working on a new game right now (not the exact same format, but set in the same world), and I also hope to do more text-only like this one someday.
I'll see if I can do anything about the save text (there may be limitations from OS/hardware changes, so can't 100% promise there). As for the Android price, unfortunately they're probably adding on Play Store fees or something depending on your region. It's been going for $4.99 USD on all platforms since launch, but the app stores in particular have all sorts of different tax/fee policies based on location.