The English 999 iOS is finally being released on March 17th!
Make sure to grab it on your iPhone, iPad, and/or iTouch to support the series! Help get Zero Escape 3 into production!
The iOS has the entire game in HD with new (amazing) portraits and a flowchart similar to VLR. There are no puzzle sections of this version, however, and the game is instead a full-on visual novel. The puzzle scenes have been replaced with simply some dialogue of the characters working their ways through the rooms themselves.
(As a note, I do own the Japanese version of this iOS, which is why the three screenshots I provided are in, you know, Japanese. Just saying before anyone asks.)