This is a simple Decryption Program.
The program is used to Decrypt words/sentences in which each letter been shifted up by an arbitrary number of letters.
For example: HELLO -> QDOSH
The decrypter basically lists every combination of word that the encryption could mean and also provides the number of computations done for it.
It doesn't use any complex algorithm, but can be extended to find common words and be more useful/efficient in the future.