Support

Something wrong, or a reel that did not come out right? Write to surfaceinterval@ismailov.net. Open Settings › Export record first, copy it, and paste it into the mail — it says what the app did with every video, how long each step took and what went wrong. It contains no personal information and nothing leaves your iPhone or Mac until you send it yourself.

Common questions

How long does a reel take?

It depends on how much footage there is, how long the reel is, and where the videos are. Footage already on the device is quickest. Footage still in iCloud has to be streamed over your connection first, and on a slow connection that is the whole of the wait — the app tells you when it is waiting on iCloud rather than on the device.

Why is a video marked "in iCloud"?

Because the full-size original is not on the device; Photos keeps only a small copy to save space. The app streams what it needs rather than downloading the whole 4K file, so a reel still works. If you want it faster, open the video in Photos once on Wi-Fi so Photos keeps the original on the device.

Can I mix vertical and horizontal video in one reel?

No, deliberately. A reel that mixes the two has to either crop your footage or put bars down the side of half of it, and neither is worth doing to a dive. The app keeps vertical and horizontal footage in separate folders and makes a reel of one or the other.

My footage is already colour-corrected in the camera.

The app recognises that and leaves it alone rather than correcting it twice. Osmo Action and Insta360 footage exported with the camera's own correction is the usual case.

Which cameras work?

Any camera that writes an ordinary video file: DJI Osmo Action, GoPro, Insta360, iPhone and most others. Bring the files in from Photos, or straight off a card: through Files with a card reader on iPhone, or from a card, a drive or a folder on Mac.

What resolution do reels come out at?

1080p, which is what most places you post to accept. For YouTube there is "YouTube optimized output": 4K and 10-bit, which YouTube keeps sharper, in files about three times the size. On iPhone you turn it on beside the reel's length; on Mac it is on unless you turn it off. The correction is done at the resolution the footage was shot.

The reel stopped halfway.

Reels are made in the foreground, and an iPhone that gets hot will pause the work and take it up again when it cools. Leaving the app pauses it too. When you come back it carries on from the shot it had reached rather than starting over.

Why is there a watermark?

The app is free, with a daily cap of two reels, and those reels carry a small mark in the corner. For extensive use there is a subscription, Week or Year, or Lifetime paid once: it lifts the cap and unlocks the Watermark switch in Settings. On a new iPhone or Mac the purchase usually comes back by itself; if not, tap Restore Purchases on the offer, reached from Settings.

How do I cancel a subscription?

Week and Year are Apple subscriptions and renew until you cancel them, in the Settings app under your Apple Account's Subscriptions, at least a day before the period ends. Buying Lifetime does not cancel a Week or Year subscription by itself. Refunds are Apple's to give, at reportaproblem.apple.com.

Where does the music come from?

From Pixabay, under its Content License. Eight tracks are built into the app, and 45 more can be downloaded from Apple in Settings, on iOS or macOS 26.4 or later. One is picked for each reel. There is nothing to credit and nothing to pay.

Does the app upload my footage?

No. It makes no network call of its own. See the privacy policy.