Exactly what it says on the tin. Simple but very useful. As an enhancement suggestion, allow for the cypher to be shifted either direction (e.g. ROT-12, ROT-14, etc.)
It does simply and interactively what a Rot13 decoder/encoder should do. No more. No less. It has : no BS, no network for calling-home, no ads, no nagscreens, no popups, no permissions, no registration. It has a simple (non-simplistic) functional interface. It is Freeware. MISSING : Copy button Paste button .
-- v1.3.1 --
* Fixed missing launcher icon
-- v1.3 --
* App will use "Material" theme if available
-- v1.2 --
* Dutch translation
-- v1.1 --
* Removed menu from About activity (it wasn't supposed to be there in the first place).
* Better landscape mode support.