I know you'd prefer a standalone version, but when I started learning piano I was looking for a flashing metronome that I couldn't miss as I can't stand a noise making one (it really hurts my ears).
After trying a lot, I found this app version of what seems to be a more than complete model:
https://play.google.com/store/apps/details?id=com.eumlab.android.prometronome
I put it on my tablet and it was just perfect.
It even has a polyrhythmic mode and you can set the light almost wherever you want.
Worth giving it a try.