VibraTimer let you create a sequence that made your phone Vibrating at programmed steps.
You can set-up the duration, the description and how many vibration for a sequence's step.

You can use it for a thesis or a buisness presentation, when you want to know how much time is passed since you've started talking. So you can finish before someone says : "does it take longtime to be finish?"

You can use it for sport activity, when you want to set-up an exercise but you have not time to look at the device; so you feel the iPhone Vibrating and a notification appears on the screen, letting you know the details of the programmed sequence.

You can use it as cooking timer, when you have a lot to do and you have not time to use the device because your hands are dirty.

You can use it as you want, just set-up your sequence, start it and live the things you have to do.