MoveLens
Some moves are too fast to copy. MoveLens slows them down until you can see exactly what is happening — then lets you practise right beside them, on video or live on camera.
Built first for dancers picking choreography apart from video, and just as useful to anyone who learns by watching a body move: martial artists, gymnasts, climbers, skaters, swimmers, golfers, coaches, and anyone working through a physio routine at home.
Slow it down
Play a video anywhere from full speed down to a tenth of it, on a slider that settles wherever you want it — 0.35×, 0.70×, whatever the passage needs. Scrub to the exact count and it stays there. Every video loops on its own, so a two-second phrase repeats until you have it.
Mirror it
A tutorial filmed facing you puts their left on your right, and the translation is where the learning leaks away. One tap flips the video, so their left becomes your left and you can simply follow.
Compare two videos
Put your run beside the original and play them together — or each at its own speed, since your version is rarely the tempo theirs is. Swap either side out for a different video without leaving the split. It is the quickest way to see a difference you cannot feel.
Practise beside it, live
New in version 1.2: skip the recording and put your front camera on the second side. The original plays on one half, slowed and looped however you set it, while you watch yourself on the other, mirrored the way a studio mirror shows you. Tap either side to start or stop the video, and the screen stays awake for as long as the camera is on.
A library that keeps up
Bring videos in from Files, from Photos, or by pasting one straight from the clipboard. Everything you import is saved automatically, newest first. Favourite the ones you keep returning to, add a short note to any video — the counts, the correction, the class it came from — and sort by size once the library grows.
Your videos stay yours
Nothing is uploaded. Imports are copied byte for byte with no re-encoding, so the footage you study is exactly the footage you shot, at full quality. Saved videos are kept out of your iCloud backup, which means a large library will not eat your iCloud storage. The live camera is a picture on your screen and nothing more: it is never recorded, saved or sent anywhere. No account, no sign-in.
Guides
- How to mirror a dance video on iPhone
- How to slow down a video on iPhone
- How to compare two videos side by side on iPhone
The details
iPhone and iPad, iOS 26 or later, with VoiceOver support throughout. Available in English, Spanish, French, Russian and Simplified Chinese.
MoveLens is free, with no ads from version 1.2. Slow motion, looping, mirroring and the library stay free. Compare mode, with a second video or the live camera, is free on the first three days you use it; after that a one-time in-app purchase unlocks it for good, and it carries across to your other devices.