And then I found a blog about Smile's new version of TextExpander touch, which includes a keyboard and allows you to use TE in native applications like Mail and Safari and third-party apps like Evernote even when those apps don't support TE's API. Smile say:
TextExpander touch 3, coming on the heels of iOS 8 this fall, includes a TextExpander keyboard which can expand snippets in any app on the iPhone or iPad, including built-in apps such as Mail and Safari.I don't use TextExpander at the moment because it doesn't work with the applications I use in iOS. I'm not yet certain that I would use it in iOS 8 (although it probably makes sense as part of my wider quest to improve my workflow and move away from Windows) but I'm thinking about it. TextExpander Touch is the first keyboard app I've seen that delivers enough benefit for me to consider a switch.
Prior to iOS 8, only apps which implemented the TextExpander touch SDK could expand snippets directly.
Under iOS 8, the TextExpander keyboard will work system-wide and reliably share snippets with the TextExpander app. The keyboard will also include full VoiceOver accessibility support.
It'll be interesting to see what other developers bring to the party when Apple releases iOS 8 to the masses.