# Survival Odds vs CO2 Modeller

The clearest difference is review sentiment: Survival Odds at 100% against CO2 Modeller's 75%. Survival Odds also leads on update cadence (every 7 months vs every 36 months). CO2 Modeller's advantage is iOS requirement (12.1 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Survival Odds ships an update every 7 months, CO2 Modeller every 36 months. The most recent releases landed on September 28, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Survival Odds | CO2 Modeller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.5 (2 ratings)](https://appshunter.io/ios/app/co2-modeller/id1037101261/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 36 months |
| Monetization | Free | Free |
| Size | 1 MB | 9 MB |
| Requires iOS | 26.0 | **12.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Kenneth Klinger](https://appshunter.io/developer/539184948) | [Alex Rogers](https://appshunter.io/developer/346832869) |

## What reviewers say

### Survival Odds

[App page](https://appshunter.io/ios/app/survival-odds/id539184945)

Estimate your life expectancy using US mortality data. Calculate actuarial values like annuity and life insurance payments. Visualize survival probabilities with an interactive chart.

**Highlights:** Life expectancy estimation, US population mortality data, Annuity present value calculation, Life insurance payment calculation, Interactive survival probability chart

**Features:** macOS Compatibility

**In-app purchases:** none


### CO2 Modeller

[App page](https://appshunter.io/ios/app/co2-modeller/id1037101261)

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.

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Survival Odds free?

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

### Is CO2 Modeller free?

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

### Do Survival Odds or CO2 Modeller have ads?

Neither Survival Odds nor CO2 Modeller shows ads.

### Which is updated more often, Survival Odds or CO2 Modeller?

Survival Odds ships an update every 7 months, and CO2 Modeller every 36 months. Most recently, Survival Odds was updated on September 28, 2026 and CO2 Modeller on October 2, 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.*