Dark Time is a simple clock. It has one simple goal, to allow you to see the time, especially when it's dark. It doesn't try to look like a physical clock. It uses a very readable font and color scheme to make the time as readable as possible.
Dark Time was created from a need to see the time in the middle of the night without your iOS device being too bright overall. Some of us are light sensitive and the need for a clock that isn't too bright but is highly visible has existed for a long time.
The author is an instructor of programming at a college in Wisconsin. The app is the result of the author's own journey in learning iOS development. He now teaches iOS development at the college and uses this app as a demo and example. This app is released under an open source license here: