MLS eCampus vs CO2 World Info
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MLS eCampus
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.
- Mobile-friendly courses
- Access lectures, audio, video, graphics
- Quiz feedback and progress tracking
- Downloadable study aids
- Offline content access
- License preparation
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Mariners Learning System | Anywhere. Any Time. Any Device. Enhance your learning experience with our mobile-friendly courses - The MLS App provides you with the knowledge and tools needed to study for your exam. You can access lectures, audio, videos, and graphics depending on the course you are enrolled in. Get feedback on your quizzes and mark your progress so you can set yourself up for success when you’re ready to take the proctored exam. Download audio, eBooks, and additional study aids to your device. As an additional convenience, you can access content offline while commuting or when your Internet connection is unstable, even on an aeroplane! Make your breaks more productive, learn during your downtime, and discover what steps you need to make to improve your boating knowledge or earn your USCG or FCC license. The MLS app makes it easy to learn your way on the go. * While the mobile app is a great asset throughout your educational journey, students CANNOT take the final proctored exam on a mobile device.
CO2 World Info
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CO2 World Info is an educational app for exploring historical greenhouse gas emissions by country and estimating a personal lifestyle carbon footprint. WHAT YOU CAN DO • Interactive world map of country-level CO2 emissions • Country profiles with population context and emissions metrics • Global emissions rankings • Personal carbon footprint calculator (transport, home energy, diet, shopping) • Short educational notes about major greenhouse gases WHAT THIS APP IS NOT • Not live atmospheric sensor monitoring • Not a 3D globe or satellite product • Not an official government inventory portal • The footprint tool is a simplified educational estimate, not a certified audit DATA SOURCES Country emissions figures come from publicly available climate research datasets (for example Our World in Data and national inventory compilations). Values are historical and refreshed when source datasets publish updates. PRIVACY No account is required. The footprint calculator runs on your device. Privacy policy: https://linespotting.com/privacy-policy/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | MLS eCampus | CO2 World Info |
|---|---|---|
| Price | Free | Free |
| Rating | 1.8 (13 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 13 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 74 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Mariners School, Inc. | LineSpotting AB |
In-app purchases
MLS eCampus
No in-app purchases
CO2 World Info
No in-app purchases
Questions
Is MLS eCampus free?
Is CO2 World Info free?
Do MLS eCampus or CO2 World Info have ads?
Which is updated more often, MLS eCampus or CO2 World Info?
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