# 极地阳光up vs 车掌门安防

The clearest difference is update cadence: 车掌门安防 at every 3 weeks against 极地阳光up's every 12 months. 极地阳光up's advantage is iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

极地阳光up ships an update every 12 months, 车掌门安防 every 3 weeks. The most recent releases landed on October 7, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 极地阳光up | 车掌门安防 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Size | 71 MB | 37 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhejiang Wohao Wood Industry Technology Co., Ltd.](https://appshunter.io/developer/1446391117) | [Shenzhen Zhongxinyou M2M Technology Co., Ltd.](https://appshunter.io/developer/1489982535) |

## What reviewers say

### 极地阳光up

[App page](https://appshunter.io/ios/app/up/id1320722431)

**In-app purchases:** none


### 车掌门安防

[App page](https://appshunter.io/ios/app/id6469493698)

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

**In-app purchases:** none


## Frequently asked questions

### Is 极地阳光up free?

极地阳光up is free to download, with no in-app purchases.

### Is 车掌门安防 free?

车掌门安防 is free to download, with no in-app purchases.

### Do 极地阳光up or 车掌门安防 have ads?

Neither 极地阳光up nor 车掌门安防 shows ads.

### Which is updated more often, 极地阳光up or 车掌门安防?

极地阳光up ships an update every 12 months, and 车掌门安防 every 3 weeks. Most recently, 极地阳光up was updated on October 7, 2026 and 车掌门安防 on September 29, 2026.

---

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