Visual Metronome

Above: Visual Metronome audio output, 4 seconds at 120 BPM. Notice how the beats line up perfectly with the second / half second marks

Above: Apple Metronome audio output, 4 seconds at 120 BPM. Apple generously gave sample metronome code to all iPhone / iPod developers, and many developers have based their code on this example. Unfortunately, you can see here that the timing in Apple's app is not very good... and thus the timing of many competitors who used Apple's code suffers as well. The audio engine for Visual Metronome was written from scratch.

Above: Visual Metronome audio output 1 second at 300 BPM, eighth notes. Note the timing is still dead on... at 300 BPM an eighth note comes every tenth of a second.

Above: Competitor audio output, 1 second at 150 BPM, sixteenth notes. Note the uneven spacing between beats, and how far off the last beat is from the one second mark. Even worse... it's already dropped an entire beat by that point; one second should mark beat 11 at this tempo, instead this competitor is late delivering beat 10.

Just to drive the point home, the above pic shows Visual Metronome playing sixteenth notes at 720 BPM! At 720 BPM there should be 48 sixteenth notes per second; Visual Metronome nails it, even if your ear won't be able to hear it.