Dd's Dictionary is an iOS app for the iPod, iPad, and iPhone that was created by a mother because her daughter was struggling with phonics. It has the option of choosing the "Dysle+ie" font. The reader can use the dictionary app when they don't know a word they are reading, or when they are writing.
When you open the app, the default is not the "Dysle+le" font, and the back ground is white. If you hit the settings button, you can change the background to green (supposed to help keep the letters from moving, or getting mixed up), and you can select to have the easier to read font. Lastly, you can change the option to speak the word as soon as the word is selected.