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:
My Family Tree has a neat option available if you have OpenDyslexic installed. [Ctrl] + D will change all the fonts used to OpenDyslexic! Get it: http://chronoplexsoftware.com/myfamilytree/ Developer website: http://chronoplexsoftware.com
The last stable version of OpenDyslexic was released in November 2012. In December of 2012, I had the fantastic privilege of sharing OpenDyslexic at TEDxGateway in Mumbai. There's been a whirlwind of interviews and OpenDyslexic has been shared continually by many people. My server has gone out a few times from the traffic! Since that time, it's been picked up by a huge number of application developers, authors, websites, linux distro's, and has been downloaded well over 111,000 times!