Very good
I like it a lot but for a lot of rhythms I do, 250 is just not enough if its odd groupings. With even groupings you can use the 8th note mode but there you can only manipulate every groupe of 2, not every 8th note. For me, if you could choose groupes up to 32 and up to 500 bpm, it would be my go-to metronom app.