Not very accessible, not very accurate
While the alphabet and list of contracted words are well enough in this app, the punctuation section is full of errors and incomplete. You can get all of this information for free and much more accurately by Googling "UEB braille chart" or "UEB braille cheat sheet". This app also is not formatted well for screen reader use, which would be funny if not for the people who would need it most being screen reader users.