Apk is a format used by the android users and all the applications and games used in the android devices are in the android application package shortly called as apk. Since the android is used by millions of people, game developers develop different games in apk format. The hack tools for the games are developed by the hack developers to suit the file format of the appropriate game. If the hack tools are developed for android then it must be in apk format unless it will not be useful and for iOS platform the hack tool should be in the iOS format.
The hack tools are used to reward the player with unlimited bonuses and credits available in the game for which actually the player has to play hard if the player does not use the hack tool. The clash royale hack apk is available for the android users who love to play clash royale game but lack in rewards.
The players can avail the tool from any websites but the player should be aware of the virus infection. Much websites that grants hack tool and cheat codes are infected with virus which will affect our device if we have to download otherwise no issues.
In some of the websites the software will be available in the website itself from which the user can get the credits in to the game account. After entering the user name and password of the game account the user will have to enter the quantity of needed rewards which will be credited in few seconds in to the game account. But when it comes to android mostly the genuine hack tools are downloadable depends upon the game you play and for clash royale you have to download the tool into the device to attain the rewards. Therefore it is better to avoid the virus infected websites to protect your device.