I have just submitted for review a new version of JustTime. Even though it's something I do not like (because the presenter is less visible), sometimes you have to deliver presentations in rooms that are dark. In this case the bright theme of JustTime was quite distracting… This is solved with this release, which adds a "blackboard" dark theme. This new theme should be discreet even in the darkest room, allowing you to know how long you have been talking for, without being visible for everybody.
A special thank you to Jay Neuberger, for the nice photo of the blackboard!
I will drop a line here as soon as the new version is released on the App Store.