Take, for example, my need to find a teleprompter app yesterday. After all, they're not all installed on your phone, right? Thou speaks truth to power, my young padawan, but there's more to it than that. They are still in my purchased list to this day. In any case, the point is that I was exploring what apps were becoming, and so I downloaded a metric frak-ton of them. You can read all the sordid details (including financial results) here, if you want. I won't bore you with the story of my limited adventures as an app developer. If you were dedicated (and considering getting into the app business), you could do that back then. I remember because I scanned through every. It was within weeks of the App Store opening, and there were all of 25,000 apps on the store. I bought my first iPhone eight years ago. But I do have is an insanely large library of purchased (or 'purchased' if you count free apps) apps in my App Store library. I don't have all that many apps installed on my phone, although it's still worthwhile cleaning them out. Even so, clearing out apps can remove clutter.
Like me, he has the maximum amount of storage on his iPhone (128GB), so it's not as important to him as to those suffering on 16GB phones. Walt went through his iPhone apps and deleted half of them.