# CO2 Modeller

> Earth system model for simulating carbon emission reduction effects on climate. (iPhone/iPad app by Alex Rogers.)

- Source: https://appshunter.io/ios/app/co2-modeller/id1037101261 (this page in markdown: same URL + `.md`)
- Developer: [Alex Rogers](https://appshunter.io/developer/346832869)
- Category: Education
- Price: Free
- Rating: 2.50/5 from 2 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.1 · 9 MB
- Languages: American English
- Released: 2015-11-24
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/co2-modeller/id1037101261/reviews.md

## What is CO2 Modeller?

Model the effect of carbon emissions reductions on climate change using your smartphone or tablet.

CO2 Modeller uses a streamlined computationally efficient Earth system model to simulate the effect of carbon emissions reductions on climate change. It generates twenty-first century projections of atmospheric carbon dioxide concentration and global averages of surface warming, sea level rise and ocean acidification.

## Key features

- Model carbon emission reductions
- Simulate climate change effects
- Project CO2 concentration
- Estimate global warming
- Predict sea level rise
- Analyze ocean acidification

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/co2-modeller/id1037101261/reviews.md

### 4/5 — Please Read

*2024-09-19, version 1.1.1*

I Don’t Like How I Can’t Change To 1990 Please Fix This Or I Never Play It Ever Again

### 1/5 — App crashes on tap (ios14/iPhone 12)

*2021-07-16, version 1.1.0*

App doesn’t work, back to Xcode it goes perhaps?

### 5/5 — Great! Easy to use!

*2015-11-25, version 1.0*

Great educational app, very easy to use and straight forward. Allows you to map CO2 emissions right in front of your eyes! Very intuitive and well designed! Brilliant!

### 5/5 — Review

*2015-11-25, version 1.0*

Very good, educational app, was very informative and intuitive. Allowed for ease of access and to assess co2 emissions policies with simple touches and the palm of my hand.

## Frequently asked questions about CO2 Modeller

### What does CO2 Modeller do?

CO2 Modeller simulates the impact of carbon emission reductions on climate change. It projects atmospheric CO2 concentration, global warming, sea level rise, and ocean acidification for the 21st century.

### Is CO2 Modeller free to use?

Yes, CO2 Modeller is available for free. It does not require any payment to download or use its features.

### What devices does CO2 Modeller support?

CO2 Modeller is available on iPhone, iPad, and iPod devices. It is designed for iOS mobile and tablet users.

### How often is CO2 Modeller updated?

The latest version of CO2 Modeller is 1.1.2, last updated on April 15, 2025. This indicates a recent update, suggesting ongoing development and maintenance.

### What is the age rating for CO2 Modeller?

CO2 Modeller has an age rating of 4+. This means it is suitable for users aged 4 and above.

### What is the user sentiment for CO2 Modeller based on ratings?

CO2 Modeller has a rating of 2.5 stars from 2 ratings. This indicates a mixed to negative user reception based on the limited feedback available.

### Does CO2 Modeller have ads?

No, CO2 Modeller does not contain advertisements. Users can engage with the simulation features without interruption.

### Can I track my progress with CO2 Modeller?

CO2 Modeller focuses on simulating climate projections rather than tracking individual user progress. It provides global environmental data based on emission scenarios.

## Version history (last 5 releases)

### 1.1.2 — 2025-04-15

Bug fix to enable dragging.

### 1.1.1 — 2021-12-29

Fix crashing bug.
Add support for new iOS versions and devices.

### 1.1.0 — 2019-01-28

Change of emissions units to gigatonnes of CO2, rather than carbon, and add support for new large iPhones.

### 1.0.1 — 2016-02-18

Small bug fix to resolve crash on some devices.

### 1.0 — 2015-11-24

No release notes.

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| [Climate from Space](https://appshunter.io/ios/app/climate-from-space/id1061553589) | — | Free | Education |
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## More apps by Alex Rogers

- [GridCarbon](https://appshunter.io/ios/app/gridcarbon/id346832866)
- [Cicada Hunt](https://appshunter.io/ios/app/cicada-hunt/id648038025)

All apps by Alex Rogers: https://appshunter.io/developer/346832869

## Related topics

[co2 modeller](https://appshunter.io/ios/topics/co2-modeller)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*