# 3x相机 vs TwinPolarCam

The clearest difference is price: 3x相机 at Free against TwinPolarCam's $0.99. 3x相机 also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 6 months). TwinPolarCam's advantage is iOS requirement (15.0 vs 17.0). On ads and device support there is nothing between them.

3x相机 is free to download; TwinPolarCam costs $0.99 up front. TwinPolarCam sells 1 one-off in-app purchase. 3x相机 asks for nothing beyond the download.

3x相机 ships an update every 2 months, TwinPolarCam every 6 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 3x相机 | TwinPolarCam |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | — | Paid |
| Size | 2 MB | 4 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [昱昕 陈](https://appshunter.io/developer/1400361655) | [天从 何](https://appshunter.io/developer/914453386) |

## What reviewers say

### 3x相机

[App page](https://appshunter.io/ios/app/3x/id6711333354)

**In-app purchases:** none


### TwinPolarCam

[App page](https://appshunter.io/ios/app/twinpolarcam/id6749207014)

Record simultaneously with front and rear cameras to create picture-in-picture videos. Easily customize the layout and capture high-quality footage in any lighting condition. Perfect for vlogging, tutorials, and preserving special moments.

**Highlights:** Simultaneous front and rear camera recording, Drag-and-drop picture-in-picture customization, 4K Ultra HD recording with stabilization, Night mode and HDR for low-light, One-tap recording and auto-save, Bilingual support (English & Chinese)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reward developers | $0.99 | one-time |


## Frequently asked questions

### Is 3x相机 free?

3x相机 is free to download, with no in-app purchases.

### Is TwinPolarCam free?

TwinPolarCam costs $0.99, and also offers in-app purchases.

### Do 3x相机 or TwinPolarCam have ads?

Neither 3x相机 nor TwinPolarCam shows ads.

### Which is updated more often, 3x相机 or TwinPolarCam?

3x相机 ships an update every 2 months, and TwinPolarCam every 6 months. Most recently, 3x相机 was updated on October 30, 2026 and TwinPolarCam on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*