TextTool is a nice little utility app for iOS. It exists to transform text and has a lot to like.
For example, want to quickly wrap some text in comment markup, there's a button for that:
Dig a little deeper and there are powerful text processing options like Regular Expression Find and Replace:
While you can enter text directly into TextTool, I see myself relying on the URL scheme to process text sent from other apps like Drafts or Editorial. The URL scheme is not only deep but well documented in the app and on the web:
TextTool is a great utility that needed to exist and does it's job well while not trying to replace your text editor. I like it a lot.
TextTool | Universal iOS | $5