A useful idea hindered by some early growing pains and iOS' poor implementation of third-party keyboards, Hemingboard (by developer Puppy Ventures) offers an appealing premise: instant thesaurus, puns, and rhymes right from your keyboard. Once installed, the app works fairly simply, after a word is typed, the user can tap Hemingboard's hummingbird (Hemingbird?) key which then replaces the keyboard with a scrolling list of synonyms, puns, and rhymes. Tap your choice, and Hemingboard replaces your typed text with your selection. So far, so good.
Unfortunately Hemingboard, as many new apps are, is in need of some considerable polish. Most notable, Hemingboard's keyboard doesn't follow iOS 9 conventions — letters don't change case with a shift key press, there's no predictive text, and there's no support for 3D Touch. Next, the device Hemingboard might really be useful on — the iPad — isn't supported (in the works according to the developer). So all of that, plus the ever annoying mechanic of switching back and forth between keyboards, this being a practical guarantee thanks to the aforementioned issues with Hemingboard's keyboard.
And of course this is all too bad (at least with version 1.0), because the concept of Hemingboard is one I could get behind — it certainly makes sense to do this sort of work "in situ" as opposed to doing a reach around with something like Terminology, and even as is, Hemingboard will be handy for some users. Yes, I like your moxie Hemingboard, but at the moment you're just a good idea — in need of further development.
UPDATE: Since our first impressions, Hemingboard has been updated to version 1.1, addressing at least two of our concerns. First, Hemingboard's keyboard now properly uses the shift key, and second, Hemingboard now works on the iPad. As of this writing, Touch ID is still not supported.
Hemingboard is requires iOS 8.4 or later and is compatible with the iPhone, iPad, and iPod touch. Hemingboard is not currently optimized for iPad.