Vibrate on audio cues

[mksmaks]

is it possible to add a vibrate option on audio cue? I usually run with my phone either on a armstrap or in my hand and sometimes do not hear the audio cue, e.g. when doing interval runs.

Greets and thanks!

[gerhardol]

I played around with vibration some time ago. There were some kind of problem I do not recall now, but it should be doable.