Chosen Solution
Why do some of my apps disappear whenever I restart my phone? How can I stop it, or fix it so that doesn’t happen?
It really depends on which apps it are and if they are already installed or downloading, Like for example Jailbroken apps can be removed on restart most likely by the security of your Phone In some cases an app gets stuck on a download, or refuses to download/update, and simply disappears because it couldn’t finish downloading/updating. And have you already tried checking for updates in both the OS and the apps themselves? If the problem keeps appearing after checking both of the things I just said, you should probably go to the nearest repair store, as it’ll most likely have something to do with your storage then EDIT: Apologies for confusing a thing or two, I sometimes forget to look at things, but you should mention what type of device it’s about in the question, but that’s just my opinion