TubeClock is a simple, no frills clock app in the style of nixie tube clocks. No fancy faux-glass-tube overlay. No unnecessary features. Just the time. Tap the screen to switch between a 24-hour and 12-hour time format. Both horizontal and vertical interface orientations are supported. Digits have a subtle, random flicker similar to that of an actual nixie tube.
This app was originally developed to explore programming for iOS devices as well as utilize some unused existing nixie type digit graphics I had made several years earlier.