Interesting concept but the text is totally not optimized for Android scaling. It was also just really confusing how to even understand what the results of your different hands would be; for example, I reached a 4OAK + flush but that didn't change the damage I was going to do to the boss.
I also didn't understand why just moving from +1 to +2 or whatever would be considered an "upgrade" as opposed to a waste of coins unless one has duplicate chips. I feel like the tutorial should make this clearer, as well as each suit power.
It was also odd that the first treasure chest of 3 that I opened ended up being a mimic, but I didn't actually fight it; the screen just blacked out and returned to the map. Is that intentional?
Lastly, the gold pouch icon on the map was really misleading; I thought it was money, not a store! So I ended up going to a store without sufficient money to buy anything.