Are you looking for Simple, Beautiful Flat Design, and Free Metronome?
Try to use “2 and 4: Real Metronome”!

"2 and 4" includes BackBeat feature.
In the 4/4 metronome, you will hear 1, 2, 3, 4, but the "2 and 4" only allows you to hear BackBeat -beats 2 & 4.
In this way, you have to feel beats 1 & 3 by yourself and you will improve your rhythmic skills.

"2 and 4: Real Metronome" will definitely make you a groove master!