Sickness is currently aiming for a Jan 20th 2016 release.
The demo covers the first 5 chapters (26.5k words) of Sickness.
It is available for download on Steam,
Windows/OSX/Linux, and Android.
The Android version is slow on many devices, due in part to the high resolution, and also limitations of Renpy on Android. The Android version may not necessarily be released in full, or may be released at a lower resolution (720p).