About Cryptaroo
Cryptaroo is an educational, mobile cryptanalysis tool intended to be handy in doing basic encryption/decryption techniques or analyzing ciphertext. Cryptaroo is largely based upon Gary Watson's desktop application CryptoHelper. CryptoHelper can be found at http://cryptohelper.sourceforge.net/ . The source code for Cryptaroo (Android) can be found at https://github.com/wesselj1/Cryptaroo_Android . The source code for Cryptaroo (iOS) can be found at https://github.com/wesselj1/Cryptaroo_iOS . Cryptaroo, as with CryptoHelper, is open-source and licensed under terms of the GNU General Public License.
by L####:
If you're intersted in historical cryptography, cryptanalysis & ciphers , then this is an absolute must have. I surprised it's only had 50 downloads as it's a truely impressive piece of work.