What it does

CountIn adds a synced count-in to any backing track, right in your browser. Upload an MP3 or WAV, and it automatically detects the tempo and the first downbeat, then adds a count-in — hi-hat, sticks, or a spoken voice — that lands exactly on beat one.

Why it exists

Most backing tracks start cold. Musicians either count themselves in by ear (risky live) or spend time in a DAW lining up clicks by hand. CountIn does that in seconds, with no software to install.

How it works

• Drop in your track

• CountIn detects BPM and downbeat automatically

• Pick a count-in sound and how many bars

• Preview for free, no signup

• Export the finished file for $19, one-time

No subscription, no account required to try it.