MRclock

This clock goes faster than a normal clock. Used to simulate time when a timetable is used on model railway operations. Several clocks can be synchronized over the local network with one master. Supports English, German, Danish and Swedish language and 24/12-hour time format.
For a compatible client for iphone, search for iMRclock.

Note! Due to a large recent update, the in-app instructions may not be up-to-date.