DuoRatio

Tired of cropping horizontal YouTube videos into vertical formats for Instagram or TikTok? Cropping not only ruins video quality but also cuts out important details from your frame. DuoRatio is here to solve your problem! "Shoot once, get two videos" — a revolutionary recording app designed for content creators, social media managers, and vloggers, unlocking the full potential of your iPhone's dual-camera system. Core Feature: Dual-Camera Sync Recording With just one tap, DuoRatio saves two completely independent, 100% synchronized, high-quality video files simultaneously: • Vertical Video (9:16): Captured by the Wide lens, perfect for Instagram Reels, YouTube Shorts, and TikTok. • Horizontal Video (16:9): Captured by the Ultra Wide lens, perfect for YouTube, presentations, and web content. (Zero post-production, no quality loss from cropping—ready to publish right away!) Powerful Features for Creators • High Quality Output: Choose between 4K and 1080p resolutions to meet professional project needs. • Flexible Frame Rates: Supports 24, 30, and 60 fps for cinematic slowness or smooth motion. • Custom Formats: Export in MOV or MP4, seamlessly fitting into your Final Cut or Premiere editing workflows. • Dual Preview: Intuitive Picture-in-Picture (PiP) preview shows both aspect ratios while recording, ensuring perfect framing for every angle. • Storage Estimator: Real-time display of "Remaining Record Time" so you never run out of space unexpectedly. • Single-Camera Friendly (Fallback Mode): If your device doesn't support dual-camera recording, DuoRatio automatically switches to a smart single-camera mode, cropping a single feed into both 9:16 and 16:9 formats so you still get the core value. Who is DuoRatio for? YouTubers / Vloggers: Double your efficiency by generating long-form and short-form promo content at the exact same time. Social Media / Event Videographers: Capture events in multiple formats simultaneously without missing a moment. Designers / Artists: Record your creative process with a horizontal view for your portfolio and a vertical view for your stories. Podcasters: Easily record flawless, multi-angle conversation footage. Device Compatibility The full dual-camera recording feature requires an iPhone with multi-camera support (iPhone XS or newer multi-lens models recommended). Single-lens devices (like the iPhone SE series) can use the smart auto-crop single-camera mode. Requires iOS 17.0 or later. Ultimate Privacy Commitment DuoRatio is a one-time purchase app with zero in-app purchases, no subscriptions, and absolutely no ads. We deeply respect your privacy: the app contains no tracking SDKs, requires no account registration, works completely offline, and collects zero user data. All your recorded videos are saved directly and securely to your device's native Photo Library. Download DuoRatio now and turn the time you save on editing into more time for creating!