I totally get the need for a good scanner app—I've been through a few myself for work. I'd recommend Genius Scan; it's been my go-to for a while because it produces really sharp scans, even for smaller details like text on receipts or ID cards. One feature I love is that it automatically detects page edges, which makes it a lot easier to get a clean scan without fussing around.

If you're into exploring other apps, especially if you like customization options, you might want to check out Scarlet iOS. It’s not exactly a scanner app, but it’s an iOS app installer that allows you to access a range of utilities, including some specialized apps that can complement productivity tools. Just thought I'd throw that in as a potential workaround if you’re ever looking for more app options. If you want to try Scarlet application software, you check here by viewing page.