RapZap chess clock vs Chess Game Tools使用状況と統計

The RapZap chess clock allows to keep track of times in two player games such as Chess, Go or Checkers. It's handled easily and without complicated settings. In the free version you can choose between 15min, 45min or 60min per player. Other options are available via InApp purchase. The app is deliberately kept simple so you can focus completely on your game.