This app is a simulator for the Lorenz SZ40 Cipher Machine. It runs in real time and allows the user to study how it works, create custom variants of the machine and to encrypt and decrypt text of their own to share with friends! You can even create your own settings for the machine that you can share so you and your friends can communicate in private!

The Lorenz SZ40 Cipher Machine was a encryption machine used during World War II to encode messages to share between the higher ranking officials. While Enigma is far more widely known, it was much more basic and easy to decrypt than the Lorenz machines, which acted as successors.

The UI is clean and simple and contains everything you need to truly simulate how the machine worked. No cutting corners, this is a true simulation! There are plenty of exciting new features planned for the future too, as this app is aimed at preserving a very important and cool piece of history.

If you're a history, cryptography or mathematics buff you will love this simulation app!