# omby.me vs CO₂ Score

The clearest difference is in-app purchases: CO₂ Score at none against omby.me's 4. CO₂ Score also leads on update cadence (daily vs every 5 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. omby.me sells 4 in-app purchases, starting at $2.99 per month. CO₂ Score asks for nothing beyond the download.

omby.me ships an update every 5 days, CO₂ Score daily. The most recent releases landed on October 20, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | omby.me | CO₂ Score |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 days | **Daily** |
| Size | 53 MB | 65 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Emre Sertel](https://appshunter.io/developer/1798003962) | [IBRAHIM TOLGAR SASMAZ](https://appshunter.io/developer/1856515737) |

## What reviewers say

### omby.me

[App page](https://appshunter.io/ios/app/ombyme/id6744624469)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Monthly Lux | $24.99 | per month |
| Yearly Premium | $24.99 | per year |
| Yearly Lux | $249.00 | per year |


### CO₂ Score

[App page](https://appshunter.io/ios/app/co-score/id6755812154)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is omby.me free?

omby.me is free to download, with in-app purchases available.

### Is CO₂ Score free?

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

### Do omby.me or CO₂ Score have ads?

Neither omby.me nor CO₂ Score shows ads.

### Which is updated more often, omby.me or CO₂ Score?

omby.me ships an update every 5 days, and CO₂ Score daily. Most recently, omby.me was updated on October 20, 2026 and CO₂ Score on October 28, 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.*