MoveLens app icon

MoveLens Support

Something not working, or not behaving the way you expected? Write to me and I will get back to you.

info@swiftyapp.ca

I reply within two business days. To save a round trip, please include:

Requirements

Devices
iPhone and iPad, iOS 26 or later.
Languages
English, Spanish, French, Russian and Simplified Chinese.
Accessibility
VoiceOver is supported throughout the app.
Price
Free, with no ads from version 1.2. Compare mode is free on the first three days you use it; after that, one optional in-app purchase unlocks it for good. Everything else stays free.

Frequently asked questions

How do I get a video into MoveLens?

Three ways: from the Files app, from your Photos library, or by pasting one straight from the clipboard — handy when a friend sends you a clip, or you copied it on your Mac. Everything you bring in is saved automatically, newest first.

How do I slow a video down?

Open a video and use the speed slider. It settles anywhere between full speed and a tenth of it, so 0.35× and 0.70× are as available as 0.5×. Scrub to a particular count and it stays there. Every video loops on its own, so a two-second phrase repeats until you have it.

The tutorial’s left is my right. Can I flip it?

Yes — one tap mirrors the video, so their left becomes your left and you can follow along without translating every move.

Can I play my own attempt next to the original?

Open the split view and play both together, each at its own speed if you want, since your run is rarely the tempo theirs is. You can swap either side out for a different video without leaving the split: tap the swap button (the circling arrows) in that side’s corner. From version 1.2 the split opens with the live camera on the second side, and the same button puts your video there instead.

Can I watch myself live next to a video?

Yes, from version 1.2. Open a video and tap the compare button (the two dancers) at the top of the player. The split opens with your front camera already beside the video, mirrored the way a studio mirror shows you, while the video plays slowed and looped however you set it. iOS asks for camera access the first time. Tap either side to start or stop the video.

If you have put a second video there, the swap button (the circling arrows) on that side offers the camera again.

It is a live picture only. Nothing the camera sees is recorded, saved or sent anywhere, and the microphone is not used.

The camera pane asks me to allow camera access.

Camera access was declined at some point. Turn it back on in iOS Settings → Privacy & Security → Camera → MoveLens. Compare mode works without it: while access is off, the split opens with an empty second side that takes a video in place of the camera.

The video does not fill the screen.

Pinch out to fill the frame, pinch in to fit the whole thing. Useful with portrait footage where the detail you are after is small.

Where are my videos stored? Will they be in my backup?

They stay on your device, inside MoveLens’s own storage, copied byte for byte with no re-encoding.

Saved videos are deliberately excluded from iCloud backup, so a large library will not eat your iCloud storage. It also means that restoring a new device from a backup will not bring them back, and that deleting the app deletes them. Keep your originals in Photos or Files if they matter to you.

Is compare mode free?

For three days, and then it is a one-time purchase. From version 1.2, compare mode — a second video or the live camera — is free on the first three days you open it, not the first three after installing, and a small line under the compare button counts the days left. After that, the compare button offers Unlock Compare, which you pay for once and which carries across to your other devices signed in to the same Apple Account. Slow motion, looping, mirroring and the library stay free.

I had MoveLens before version 1.2. Do I have to pay?

No. If you first installed version 1.1 or earlier, compare mode stays free for you, with nothing to tap. And if you bought Remove Ads, that purchase is now Unlock Compare and you already own it.

Where did the ads go?

Version 1.2 has no ads, for everyone. If you still see a banner, you are on version 1.0 or 1.1, and updating MoveLens from the App Store removes it.

I bought Unlock Compare, or Remove Ads, and the app is asking me again.

Tap the Unlock Compare button above the import buttons in the library, then Restore Purchase. Purchases follow the Apple Account that made them, so check that you are signed in with the same one — a different Media & Purchases account genuinely has to buy it again.

How do I get a refund?

Refunds are handled by Apple rather than by me. Go to reportaproblem.apple.com and sign in with your Apple Account.

What video formats work?

Anything iOS itself can play, which covers essentially everything a phone or camera produces. Files are imported exactly as they are, with no re-encoding, so what you study is what you shot, at full quality.

Is anything uploaded?

No. Your videos never leave your device, the live camera is never recorded, and there is no account or sign-in. The privacy policy covers what the app does collect.

Known issues