Dual camera, one tap
Record front and back at the same time with a draggable, resizable picture-in-picture window. Frame both angles in real time — perfect for vlogs, reactions and tutorials.
Live on iOS & Android
Duoptra.
Two cameras, one take.
A pro dual-camera app for iPhone, iPad and Android. Record front and back at once, monitor exposure with waveform, zebra and focus peaking, and edit straight away — in HEVC or ProRes.
ISO
200
SHUTTER
1/120s
Features
Designed for filmmakers.
A camera app that thinks like a cinema rig — pro codecs, real-time monitors, and the kind of manual control the stock camera never gives you.
Pro codecs
H.265 (HEVC), H.264, Apple ProRes 422 and ProRes 4444 in MOV or MP4. From 720p to 4K at up to 60 fps.
Waveform & zebra
A real-time luminance waveform and GPU-accelerated zebra stripes catch blown highlights before you hit record.
Focus peaking
Metal-powered edge detection highlights what's tack-sharp in red — nail focus on the first take.
Full manual control
ISO, shutter speed from 1/8000s to 1/4s, exposure bias from −3 to +3 EV, zoom from 1x to 10x with haptics, and tap-to-focus.
Built-in editor
Trim, crop with aspect-ratio lock, scale up to 5x, rotate in 90° steps and flip — without ever leaving the app.
Cinema-grade monitoring
See what the
sensor actually sees.
Live overlays show exposure, focus and audio levels at the moment you press record — so the take you walk away with is the one you wanted.
- Waveform monitor with overexposure detection
- Animated zebra stripes & rule-of-thirds grid
- Stereo audio meter with peak hold
How it works
From pocket to post.
01
Pick your format
Choose HEVC, H.264, ProRes 422 or ProRes 4444 in MOV or MP4.
02
Dial in the shot
Set ISO, shutter speed, exposure bias and zoom — or leave them on auto.
03
Roll both cameras
Toggle dual cam and frame the PiP window — front and back, one take.
04
Edit on the spot
Trim, crop, rotate and flip — straight from the built-in editor.
Pro tools
Everything a cinema rig would give you.
All the pro features bundled in — no plug-ins, no in-app purchases, no extra hardware.
Dual Camera Picture-in-Picture Waveform Zebra Focus Peaking Audio Meter Rule of Thirds ISO Shutter Speed Exposure Bias Zoom 1x–10x Tap-to-Focus Stabilization Low-Light Boost HEVC H.264 ProRes 422 ProRes 4444
FAQ
Dual-camera questions.
Common questions about Duoptra on iPhone, iPad and Android.
What does Duoptra do that the built-in camera does not?
Duoptra adds dual-camera recording (front and back at once with picture-in-picture), full manual controls (ISO, shutter speed, exposure bias, zoom, focus), pro monitoring tools (waveform, zebra, focus peaking, audio meter) and pro codecs including HEVC, H.264, ProRes 422 and ProRes 4444 — none of which are exposed by the stock Camera app.
Can I record both the front and the back camera at the same time?
Yes. Duoptra records both cameras simultaneously, with a draggable and resizable picture-in-picture window so you can frame both angles in real time — ideal for vlogs, reactions, tutorials and behind-the-scenes content.
Which video formats and resolutions does Duoptra support?
H.265 (HEVC) and H.264 (AVC) in MOV or MP4, plus Apple ProRes 422 and ProRes 4444. Resolutions range from 720p up to 4K at up to 60 fps, with bitrate adapting automatically to the chosen codec and resolution.
What pro monitoring tools are built in?
A real-time waveform monitor for luminance with overexposure detection, a GPU-accelerated zebra overlay, Metal-powered focus peaking that highlights sharp edges in red, a stereo audio meter with peak-hold indicators and a rule-of-thirds grid.
Does Duoptra include a video editor?
Yes. Trim clips with start/end handles, crop with an 8-handle overlay and aspect-ratio lock, scale up to 5x, pan, rotate in 90° steps and flip horizontally or vertically. Metadata such as resolution, codec, duration and frame rate is shown alongside the clip.
Is Duoptra free on iPhone and Android?
Yes. Duoptra is free to download on the App Store for iPhone and iPad, and on Google Play for Android. It runs natively on each platform — no account or login required, and all files stay on your device.