Used to be terrific, but v3.0 for iPad is unusable.

I used to use this program every day to solve cryptograms. But when the author upgraded it in version 3.0, it was impossible to get out of the screen that had you input custom puzzles. So you would be stuck there. Ive stopped using it, but I will be hoping for a workable upgrade some day.

Abcde Xyz about CryptoQuote