Typefinity 4+

If you respect your time, you have to switch to this.

The only reason why I was refusing to switch to iPhone was lack of a power-keyboard.
I needed arrow key support, mod key support, and special key support (such as inputting pipe character |).

But any person whatsoever should switch to this keyboard. It's really ergonomic.

The only UX peeve I have is that it doesn't have an option to hide the thick bar down below on the iPhone version. This is dubious ergonomics at most, at the cost of approximately 7% of screen real estate. Not too cool, but not worth deducting a star.

The only scary thing is that the keyboard isn't open–source, so we're just one supply chain attack from a total leak of all our key presses.
Would be cool to have Ukrainian language support (Cyrillic alphabet). This could also be solved by making the core of the keyboard open source.

Fantastic keyboard

A completely thorough comprehensive third-party keyboard which works seamlessly on the iPad and iPhone. All the letters, numbers, symbols, advanced text prediction functions you could ever want - including foreign language letters and accents. This keyboard app is superior to any I've used previously, and it really does deserve more credit. TIP: enable the "Show Shift Hints" setting to get the most keyboard functionality.

Brilliant

I use it 100% offline, no privacy issues. Loads of useful features over the regular iPhone & iPad keyboard, well worth the money.

Nit-pick request: currently it uses a mix of Helvetica on the keys caps, and another font (Avenir?) for auto-complete. Just using San Francisco would look better and more integrated, in my opinion 😊

Developer Response ,

Thanks for your feedback. Our fonts were chosen by trial and error to provide good readability in the context of the different sizes and background colors while looking good too 🙂, though maybe at the unintentional expense of harmony. We'll experiment with the tradeoffs of using the same font in both.