Are the drum sounds free to use?
Yes. Nothing is sampled. Every hit is synthesized from oscillators and noise in your browser when you play or export, so there is no sample library or license attached to the sound.
How long is the exported loop?
Choose a loop length of 1 to 4 bars of 4/4. The WAV repeats the loop 1 to 10 times, so a 4-bar loop at 120 BPM lasts 8 seconds per repeat and 80 seconds at ten repeats.
What does an accent do?
Each step cycles through off, on and accent. Accented steps play at full velocity and normal steps play softer, which keeps a hi-hat line from sounding mechanical.
Why do I need to press Start audio?
Browsers, and Safari on iPhone and iPad in particular, only allow sound after a tap or click. The first button you press starts the audio engine.
Does anything get uploaded?
No. Playback and rendering happen entirely in this browser. Your current pattern and any loops you save to My loops are kept in local storage on this device. Download a library backup to move them to another browser.
What does the tail option do?
Wrap folds the decay of the final hits back onto the start, so the file is exactly the loop length and repeats without a click. Cut drops the tail. Keep leaves it on the end.