Hi everyone, i'm pretty new here so i'm not sure if this has already been discussed but i've heard many people talking about all of the applications that they bought from the app store just closing right after they start up. I actually had this issue and fixed it by accident. To fix it, simply log onto the app store and download another app. i really don't know the origins of this problem but this is the solution! I recommend downloading "Google Mobile App" for fixing it. It's free and a pretty small app so downloading won't take long. Anyways, you can just delete it later.