Rotten 1.4 for Mac can be downloaded from our website for free. The software lies within Security Tools, more precisely General.
From the developer:
Rotten is an application meant to offer quick and simple access to the ROT caesar ciphers.
You may want to check out more software for Mac, such as Friendly for Netflix, Are You Stupider Than Darth Vader? or ActionPotato, which might be similar to Rotten.