CHAOS RINGS Ⅲ is a Japanese RPG for Android that costs $19.99 and has zero in app purchases.
Pro Battle coliseum
There is a battle coliseum mode in the game that allows for quick battles against regular enemies and bosses that earn the player experience points. There is no story in this mode and it is meant as more of a quick on the go sesion that can still earn the player some XP that can be used in the regular story mode.
Pro Elemental rock paper scissors battling
All monster in game have some form of elemental attribute that is designed to be countered with an opposite element when battling. There are cards to be collected in game that can then be equipped to the players character in order to build a team that can hopefully in most situations counter a wide array of elemental monsters.
Pro Freemium style gameplay
The gameplay of the game consists of many of the elements found in free to play titles. There are multiple currencies, multiple characters that can be combined to upgrade as well as other Gatcha style elements. Luckily the game is fully upfront paid with no in app purchases at all.
Con Poorly adapted for Android
The game does not properly support the 4:3 ratio as the text and graphics are cut off the screen on both sides. The game loads upside down and will not rotate to the correct orientation of volume buttons on the top of the device in landscape. There is no immersive mode support either. Overall for a $20 game the glaring lack of optimization for Android is pretty shameful for such a large company that has such a long history of making video games.