This app was designed to help students to practice their braille skills. Designed by Japanese developer Takuya Kawakami, there is a free version available of this app (with advertisement), which you may wish to try before purchasing it. It currently sells for $.99 in iTunes. We have not tried it yet and would be interested to hear from any of you who do!
Requires iOS 8 or later.
https://itunes.apple.com/us/app/braille-study/id881342655?mt=8