Good but expect pay to win
This game is very well done. Small balance issues but they update monthly to tweak units to switch it up which is nice. Biggest problem is that its very pay to win once you hit a certain point. I could kinda understand regular ladder being this way but they went very far with it (big difference in power between levels) and they have this difference in power in their tournament mode as well (challenge mode). Tournament mode should just be about skill and unit choice, not levels of units (they have a lower cap here but dont play tournament mode unless your units are at that cap to stand a chance), especially since it cost gems which take some time to accumulate and cost real money. If you dont mind sinking a lot of money or time into this game, it really is a well done game, just wish wasnt so pay to win as it is.
Bad app for iOS stuffs about
Clash Royale, v1.8.1