# MLS eCampus vs CO2 World Info

The clearest difference is update cadence: CO2 World Info at every 2 months against MLS eCampus's every 13 months. 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.

MLS eCampus ships an update every 13 months, CO2 World Info every 2 months. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | MLS eCampus | CO2 World Info |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.8 (13 ratings)](https://appshunter.io/ios/app/mls-ecampus/id6447906086/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 74 MB | 41 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mariners School, Inc.](https://appshunter.io/developer/1682944065) | [LineSpotting AB](https://appshunter.io/developer/1326519237) |

## What reviewers say

### MLS eCampus

[App page](https://appshunter.io/ios/app/mls-ecampus/id6447906086)

Access mobile-friendly courses, lectures, audio, videos, and graphics to prepare for exams. Track progress with quizzes and download study materials for offline use. Improve boating knowledge or earn licenses on the go.

**Highlights:** Mobile-friendly courses, Access lectures, audio, video, graphics, Quiz feedback and progress tracking, Downloadable study aids, Offline content access, License preparation

**In-app purchases:** none


### CO2 World Info

[App page](https://appshunter.io/ios/app/co2-world-info/id6475678206)

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

**In-app purchases:** none


## Frequently asked questions

### Is MLS eCampus free?

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

### Is CO2 World Info free?

CO2 World Info is free to download, with no in-app purchases.

### Do MLS eCampus or CO2 World Info have ads?

Neither MLS eCampus nor CO2 World Info shows ads.

### Which is updated more often, MLS eCampus or CO2 World Info?

MLS eCampus ships an update every 13 months, and CO2 World Info every 2 months. Most recently, MLS eCampus was updated on October 27, 2026 and CO2 World Info on October 30, 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.*