ABC Keyboard

0-Image-1 This is a change to what you are used to in a keyboard: a keyboard layout that's entirely alphabetical. From the App Store listing:
The ABC Keyboard can help increase computer accessibility and productivity for children, individuals with special needs, and even the average two fingered typist.

Lowercase Keyboard

screen480x480-2 Apple Distinguished Educator, Matt Thomas, has made a custom keyboard for iOS8, using OpenDyslexic. Below is the description:
Lowercase Keyboard is a custom keyboard that uses both lowercase and uppercase letters, as well as a simplified set of numbers and special characters. The keyboard has been designed with elementary students in mind.