IOS emulator app problem
So I've had an iphone for about a week now so I'm pretty new to the apple stuff. I have an iphone 5 64gb with 7.1.2 iOS. I've downloaded myself GBA emu for pokemon (pretty nostalgic about the childhood ) and after 4 days of normal usage it broke down. When I tried to launch it, it just showed the first screen with the logo and shat down. Tried to reinstall, but the installation crashes at various positions of progress clock thing and it just says '<b>Can't download the program</b> Can't install GBA4iOS now'. Google says nothing about it, any ideas what should help?