http://www.bbc.co.uk/news/technology-30443083 Unfortunately I have no access to Android so cannot tell ....
I just read that article, this app can only decipher four codes: WW2 enigma; substitution; vigenere ciphers; and the shift. That may be a little too restrictive, furthermore that app seems to be an educational app (more education oriented than decryption ergonomics). There are better tools online for our interest field. See: http://forums.blackwatchmen.com/index.php?threads/useful-resources-and-tools.32/
That's an educational app, therefore that may be useful for the beginners to understand the basics, someone should try and feedback here.. (not me: i doesn't have a tablet nor android device)