I'd like a metronome with the ability to give a count-in and quit, just to start a tune at the right tempo.

So you'd select a tempo, say 120, and then click a "count-in" button or similar, and you get something like a 1.. 2.. 1 2 3 4 count in, but it doesn't keep ticking after that.

There are a lot of metronomes on FDroid, anyone know if one of them does this?