# MARINE XII vs 危险作业管控

MARINE XII and 危险作业管控 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

MARINE XII ships an update every 3 weeks, 危险作业管控 monthly. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MARINE XII | 危险作业管控 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 66 MB | 26 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [深圳市赛为安全技术服务有限公司](https://appshunter.io/developer/1258409762) | [浙江易航海信息技术有限公司](https://appshunter.io/developer/1279218875) |

## What reviewers say

### MARINE XII

[App page](https://appshunter.io/ios/app/marine-xii/id1669667734)

**Features:** macOS Compatibility

**In-app purchases:** none


### 危险作业管控

[App page](https://appshunter.io/ios/app/id6449081167)

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

**In-app purchases:** none


## Frequently asked questions

### Is MARINE XII free?

MARINE XII is free to download, with no in-app purchases.

### Is 危险作业管控 free?

危险作业管控 is free to download, with no in-app purchases.

### Do MARINE XII or 危险作业管控 have ads?

Neither MARINE XII nor 危险作业管控 shows ads.

### Which is updated more often, MARINE XII or 危险作业管控?

MARINE XII ships an update every 3 weeks, and 危险作业管控 monthly. Most recently, MARINE XII was updated on November 7, 2026 and 危险作业管控 on November 3, 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.*