# DOS vs Trident Cockpit

The clearest difference is update cadence: Trident Cockpit at every 9 days against DOS's every 6 weeks. DOS's advantage is iOS requirement (10.0 vs 13.0). 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.

DOS ships an update every 6 weeks, Trident Cockpit every 9 days. The most recent releases landed on September 28, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | DOS | Trident Cockpit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trident-cockpit/id1501545121/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | — | Free |
| Size | 16 MB | 67 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Talitor Technology Inc.](https://appshunter.io/developer/569753332) | [Dmitriy Borovikov](https://appshunter.io/developer/1336393458) |

## What reviewers say

### DOS

[App page](https://appshunter.io/ios/app/dos-v-plus/id1444331036)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trident Cockpit

[App page](https://appshunter.io/ios/app/trident-cockpit/id1501545121)

Control your underwater drone with this app. Stream live video, manage camera settings, and record your dives. It also allows you to view and download past dive footage and monitor drone maintenance data.

**Highlights:** Live drone video streaming, Gamepad control support, Camera and light adjustments, Record and geotag pilot video, View past dive footage, Monitor drone maintenance data, Payload control (GoPro HERO 3/3+)

**In-app purchases:** none


## Frequently asked questions

### Is DOS free?

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

### Is Trident Cockpit free?

Trident Cockpit is free to download, with no in-app purchases.

### Do DOS or Trident Cockpit have ads?

Neither DOS nor Trident Cockpit shows ads.

### Which is updated more often, DOS or Trident Cockpit?

DOS ships an update every 6 weeks, and Trident Cockpit every 9 days. Most recently, DOS was updated on September 28, 2026 and Trident Cockpit on June 8, 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.*