Dual Camera · Guide

How to film reaction videos, vlogs and two-camera interviews with one iPhone

Tested with Dual Camera: Front Back PiP 1.0.8 · listing checked September 29, 2026 · iPhone, iOS 16 or later

Short answer

Use both cameras at once. In Dual Camera's Front/Back mode the back camera films what you are reacting to and the front camera films you, written into one picture-in-picture video, so there is nothing to sync or overlay afterwards. Drag your face inset out of the way of the action while recording, then post the file straight from Photos. It is free, with no time limit.

Reactions: your face and the thing, in one clip

The usual reaction workflow is two recordings and an editor: film the subject, film yourself, line them up, export. With both cameras recording together the clip is finished when you stop. Tap the inset before you start to decide whether your face or the scene is the main view, and move the inset mid-take if it covers something.

Because Dual Camera can also save the take as a 16:9 and a 9:16 file at once, the same reaction goes to YouTube and to Shorts or TikTok without a second take — see one take, two shapes.

Front/Back mode: the back camera films a cathedral street while the front-camera selfie sits in a picture-in-picture inset
Front/Back mode: the back camera films a cathedral street while the front-camera selfie sits in a picture-in-picture inset

Vlogs on the move

Point the back camera at the road, the market or the trail while the front camera keeps you in frame as you talk. The grid and front-camera mirroring are free framing aids; mirroring makes the selfie inset behave the way you see yourself, which matters when you are checking your framing at arm's length.

Interviews and podcasts with zero gear

Sit across from your guest, hold or prop the phone between you: the back camera on them, the front camera on you, one file with both. Split Top and Split Bottom layouts (premium) stack the two feeds evenly instead of picture-in-picture, which reads more like a two-camera interview cut.

Layouts
LayoutFree or premiumBest for
Wide (picture-in-picture)FreeReactions, vlogs
LargePremiumA bigger inset when your face is the point
CirclePremiumStreamer-style round facecam
Split Top / Split BottomPremiumInterviews, podcasts, side-by-side reactions

Concerts, travel and sports

Show the moment and the person living it. The free tier's 1080p at 30 fps is enough for social posting; 4K and 60 fps (premium) help when you plan to crop or slow footage down later.

What this cannot do

  • It records one picture-in-picture file, not two separate camera files you can re-edit independently.
  • Free recordings carry a small watermark and are limited to 1080p at 30 fps.
  • Audio comes from the iPhone's microphones; there is no multi-track or external-mic mixing feature described in the listing.
  • iPhone only, iOS 16.0 or later; simultaneous capture needs an iPhone XS, XR or newer.

Questions people ask

What app do creators use to record their face and screen at the same time on iPhone?

For a face plus a real-world scene, a dual camera app such as Dual Camera records the front and back cameras into one clip. Recording your face over an on-screen app or game is a different task (screen recording), which this app does not do.

Do I need an editing app to make a reaction video this way?

No. The picture-in-picture layout is baked into the saved file, so it is ready to post from Photos. You can still trim or caption it in any editor afterwards.

Dual Camera: Front Back PiP

Front and back camera in one PiP video, one take saved as 16:9 and 9:16.

Free · iPhone · iOS 16+ · 15.5 MB
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