One roll. Every ratio.
Pro iPhone camera that records 16:9 and 9:16 simultaneously from a single take. Apple Log, LUT monitoring, open-gate 4:3 capture, orientation-aware framing.
Built for filmmakers and creators who can't afford to shoot twice. One recording, both formats, Apple Log quality, frame-accurate.
Two simultaneous writers grab horizontal and vertical outputs from one recording — ultra-wide feeds the 16:9, main camera feeds the 9:16. Never shoot the same thing twice for different platforms again.
True 10-bit Apple Log on supported iPhone Pros, with writer-level compatibility fallback so recording starts reliably every time.
Uses the sensor's native 4:3 format instead of 16:9, giving ~35% wider horizontal FOV in portrait-held capture.
Rotate the phone landscape for a true wide shot; portrait for vertical-first. Recording adapts without breaking either output.
Live LUT preview over Log footage. LUTs are never baked into your saved file, so your recording stays flexible for post-production.
Industry-standard exposure tools. Zone-based false colour for clipping, zebra stripes for highlights — the ones serious camera operators actually use.
Three taps to a dual-format take. Mode selector at the bottom, LUT chips one swipe up, exposure tools always one tap away.
RatioRoll runs on every iPhone with iOS 17 or later. Advanced camera features unlock automatically on the hardware that supports them.
RatioRoll is free to download and use in the current App Store release — no account, no subscription, no tracking.