Comparison

CamX vs Duo Video

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CamX

Features
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Example of use ·business Management of business cards and business letters Recording of the whiteboard in meeting materials ·A student Record notebook and blackboard on board Storage of printed materials and other items to be distributed ·Everyday life Preservation of receipts and supermarket leaflets and coupons Preservation of timetables for trains and buses Main functions · Automatic trimming · ONOFF of flash · Crop document image · Sharing to email etc. Trimming Tips · Separate shooting background and shooting object color · Do not insert multiple objects

About

Duo Video

Features
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DuoVideo lets you record with both the front and back cameras at the same time. Every session produces three separate files: a picture-in-picture composite, a clean back-camera clip, and a clean front-camera clip - all synchronized to the same timecode. - Simultaneous front and back camera recording powered by Multi-Camera capture - Picture-in-picture composite saved alongside two independent raw tracks - Choose between 720p, 1080p, and 4K resolution - Select 24, 30, or 60 frames per second - Switch between video and photo mode at any time - Mirror control for the recorded output - Configurable PiP position: front camera or rear ultra-wide - Auto-save recordings directly to your Photos library - All recordings organized in a built-in file browser with share support - Lifetime unlock available as a one-time purchase - Requires a device that supports Apple Multi-Camera capture (iPhone XS or later recommended).

Screenshots

CamX4 screens
Duo Video2 screens

Verdict

The call

The clearest difference is in-app purchases: CamX at none against Duo Video's 1. CamX also leads on ads (none vs shown) and update cadence (every 3 days vs every 3 weeks). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Duo Video sells 1 one-off in-app purchase. CamX asks for nothing beyond the download.

UpkeepUpdate frequency

CamX ships an update every 3 days, Duo Video every 3 weeks. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 2 level
CamX versus Duo Video: the parameters behind the verdict, then further details
ParameterCamXDuo Video
PriceFreeFree
Update frequencyEvery 3 days — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size23 MB15 MB
Age rating4+4+
DeveloperCodeDynamixJiangsu Mingbin Jingzhi Technology Co., Ltd

In-app purchases

None

CamX

No in-app purchases

1 purchases

Duo Video

One-time1
  • Lifetime Unlock$9.99

Questions

Is CamX free?
CamX is free to download, with no in-app purchases.
Is Duo Video free?
Duo Video is free to download, with in-app purchases available.
Do CamX or Duo Video have ads?
Duo Video shows ads; CamX does not.
Which is updated more often, CamX or Duo Video?
CamX ships an update every 3 days, and Duo Video every 3 weeks. Most recently, CamX was updated on November 2, 2026 and Duo Video on October 31, 2026.

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