Android: Entering text on your smartphone has gotten easier over the years, but it's still not quite as easy as a desktop. Inputting+ helps by bringing some key features, including undo, redo, and find and replace.
The app works by adding a hovering bubble to your screen when you're inputting text. The app stores your entered text and allows you to cycle back and forth, so it's more advanced than a typical undo. You can also search the text that you've entered to replace words. The app requires you to manually enable logging of text fields, though it does not work on sensitive text fields like passwords. You can enable this with a separate permission, but there's very little reason to do so.