CO2 Modeller vs CO2 Shopper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CO2 Modeller
Simulate the impact of reducing carbon emissions on climate change. This app generates projections for atmospheric CO2 concentration, global warming, sea level rise, and ocean acidification.
- Model carbon emission reductions
- Simulate climate change effects
- Project CO2 concentration
- Estimate global warming
- Predict sea level rise
- Analyze ocean acidification
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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.
CO2 Shopper
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Welcome to CO2 Shopper, the ultimate app for eco-conscious consumers! Our app helps you make informed shopping decisions by providing detailed information on the carbon footprint of your shopping items. By understanding the CO2 emissions associated with your purchases, you can take meaningful steps to reduce your environmental impact and contribute to a more sustainable future. Features so far (with more to come): Carbon Footprint Tracking: Easily track the CO2 emissions of your shopping items and see the total impact of your purchases. User-Friendly Interface: Enjoy a clean, intuitive design that makes it easy to navigate and find the information you need. Join the movement towards a more sustainable lifestyle with CO2 Shopper. Every small action counts, and together, we can make a big difference!
Screenshots
Verdict
The clearest difference is update cadence: CO2 Shopper at monthly against CO2 Modeller's every 36 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.
CO2 Modeller ships an update every 36 months, CO2 Shopper monthly. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | CO2 Modeller | CO2 Shopper |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 36 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Alex Rogers | Laurence Wayne |
In-app purchases
CO2 Modeller
No in-app purchases
CO2 Shopper
No in-app purchases
Questions
Is CO2 Modeller free?
Is CO2 Shopper free?
Do CO2 Modeller or CO2 Shopper have ads?
Which is updated more often, CO2 Modeller or CO2 Shopper?
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