Open a song .zip or a folder to edit the charts it
already has, or an audio file to start a new one. Any of them can
be dropped here.
Tip: Open Folder can reach Dropbox, Google Drive and other cloud apps. Switch them on once in the Files app, under Browse, then …, then Edit. Apple’s guide
Adds an empty dance-single chart to this song, timed against the audio. Step it yourself, or generate it from the side panel once it exists.
How late this device's sound comes out. Speakers, Bluetooth and the browser each add a delay, so the playhead and the judging run behind the picture to match what you hear. It belongs to the machine you are sitting at: saved in this browser, applied to every song, never written to a simfile.
Not the chart's own offset — where beat 0 falls in the audio — which is saved into the simfile and lives in the song section of the side panel.
Fills the selected chart in from the song's audio. Runs entirely on this machine; the song's own BPM and offset are used, so the steps line up with the charts beside them. You can keep editing behind the generator while it works.