The app's source code is the brainchild of the author and its release therefore remains a low priority objective. Note that the ability to peruse the app's software would not assist in deciphering purloined encrypted messages. It'd still take brute force methodologies to attack a coded string. I will add that it's no secret that the app's Unicode "Box Character" encoding system is only sugar coating and not secure. It would be the 3DES or AES algorithms (with tweaks) from the Java library that provides a measure of data security.