My Minecraft crashes every other day. When I tap on the icon the game starts, then there is a loading screen. When there are four stripes to the end the game crashes. One day it didn't crash and the other it crash.

I tap on the Minecraft icon on my iPad Air. Then the game starts. Sometimes there is white screen and sometimes there is the Mojang logo. After that there appears a loading screen with stripes. Sometimes it is loaded, so there are only four left and sometimes it starts loading until it reaches four stripes left. Then the game crashes and I suddenly go to the home screen of the iPad.

This bug(crash) appears every other day. Today the game works and tomorrow it doesn't.

I will be thankful if you tell me is the problem in the device or in the game!