RatioRoll

One take. Every ratio.

Capture vertical and horizontal clips from the same moment. Frame once. Leave with both formats ready to post.

9:16 16:9 Same take
A 16:9 wide-format crop showing a skater above a city skyline, captured by RatioRoll 16:9

One recording. Two finished frames.

RatioRoll camera UI in DUAL mode showing False Colour overlay, the floating 16:9 wide-track preview, exposure controls, and the Mode/LUT/Monitor/Format/Settings toolbar
Features

Everything a pro iPhone camera should do.

Built for filmmakers and creators who can't afford to shoot twice. One recording, both formats, Apple Log quality, frame-accurate.

Apple Log capture

True 10-bit Apple Log on supported iPhone Pros, with writer-level compatibility fallback so recording starts reliably every time.

4:3 Open-Gate

Uses the sensor's native 4:3 format instead of 16:9, giving roughly 35% wider horizontal field of view in portrait-held capture.

Orientation-aware

Rotate the phone landscape for a true wide shot; portrait for vertical-first. Recording adapts without breaking either output.

LUT monitoring & burn-in

Live LUT preview over Log footage. Optional toggle to bake the LUT into the saved file — graded on export with no post step.

False Colour & Zebra

Industry-standard exposure tools. Zone-based false colour for clipping, zebra stripes for highlights — the ones serious camera operators actually use.

See it in action

The pro camera UI you've been wishing for.

Three taps to a graded, dual-format take. Mode selector at the bottom, LUT chips one swipe up, exposure tools always one tap away.

RatioRoll camera screen recording outdoors, showing DUAL mode with the floating 16:9 wide-track preview, False Colour overlay, and bottom toolbar
Both ratios. One take. 16:9 from ultra-wide, 9:16 from main rear — frame-synced, no reshoots.
RatioRoll capturing a performer at a live concert, with the floating 16:9 preview, False Colour exposure overlay, and pro exposure controls visible
Pro exposure, live. False Colour zones, AUTO EV bias or MANUAL shutter + ISO — never baked into your recording.
RatioRoll recording an atmospheric concert stage with stage lights, demonstrating low-light dual-camera capture
Built for any scene. Apple Log capture, thermal-aware recording, and a UI that gets out of your way.
Devices

Designed for iPhone, optimised for the Pros.

RatioRoll runs on every iPhone with iOS 17 or later. The Pro features unlock automatically on the hardware that supports them.

Coming soon to the App Store.

RatioRoll launches as a one-time purchase. Two free recordings on every device — no account, no subscription, no tracking.

Coming soon on App Store