While it's clunkier than using the apps themselves, iSkin's bookmarks are among the best ways to set custom app icons on your iPhone.
When you tap on one of the 'bookmarks,' you launch the corresponding app. Instead, you download ' bookmarks,' icons that are programmed with a URL scheme name unique to the app in question. Sound too good to be true? Well, there is a catch: iSkin doesn't replace your current app icons with custom ones. Whether you want your home screen to look retro, modern, or somewhere in between, there's an iSkin icon pack for everyone - no jailbreak required. Instead, you could use a web app such as iSkin, whose site contains dozens of themes and custom app icons to choose from. While iOS 12 made gave us an unofficial built-in way to do it, and iOS 13 improved it, and iOS 14 made it the best it could possibly be, there's still another option if you don't like using the Shortcuts app. Believe it or not, there are a variety of ways to customize app icons in iOS.