I know I can just use 3/4 but 6/8 would be perfect. This is going to be a pretty straight-forward app but other time signatures would be great.

Just what I needed. Could use a little UI improvement; I want to adjust the tempo using the arrow keys (right arrow to increase, left arrow to decrease). As long as there's a history I'd like to be able to edit it (delete items, apply titles); would also be nice if clicking on a history item could instantly set the metronome to that tempo (and perhaps other attributes like volume and sound style)... although at that point it's less history and more a preset manager/library or something....

Seems to work fine, quite simple but I don't really need complexity in a metronome. What concerns me a little is that it regularly tries to access the internet, for some reason (as reported by Lulu firewall). Can't imagine why a metronome would need internet access. I've blocked it at it continues to work ok...

Metronome works well - no complaints there. However, as someone else reported, the app "phones home" a lot. I've blocked the app's internet access with little snitch, but there really should be a way in the metronome itself to opt out of being tracked. Would give 5 stars but for privacy concerns.