Practise

Watch a movement back the way you actually need to learn it: mirrored, slowed down, and beside your own attempt. Everything here happens on this device.

Practise a clip you already have

Pick a video from this device and watch it mirrored, slowed down in steps, or beside your own attempt. Set a section and loop just that.

No recording of yourself? Record one here, with the camera, and it goes straight into the comparison.

Nothing is uploaded. This page has no way to send anything anywhere, and neither clip leaves the browser.

The clip to learn fromYour own attempt

A dancer mid-move in a worn Seoul practice room at night, a propped phone running the app. AI-generated scene · real app screen — A late practice room in Seoul. *AI-generated scene · real app screen*

This browser will not keep videos between visits, so you will be asked for the file each time. Private browsing usually does that.