Originally Posted by
mikmak9068 Thanks for the answers but I really need to know what is the reason to my problem and if the iOS isn't the reason my apps take so much storage then I won't update, my phone works absolutely perfect... maybe it's something else causing the problem
As far a app size goes, on iOS 12, they will either be a bit smaller, or the same. When I switched to 12, I didn't notice any app size difference. But in iOS 13, they're supposed to get much smaller. 50% smaller, according to what they said at WWDC.