# Flight CO2 Calculator vs What's Happening

The clearest difference is iOS requirement: Flight CO2 Calculator at 8.0 against What's Happening's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Flight CO2 Calculator | What's Happening |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 43 MB | 9 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Andrea Bizzotto](https://appshunter.io/developer/539165502) | [Whats Happening ApS](https://appshunter.io/developer/1749465346) |

## What reviewers say

### Flight CO2 Calculator

[App page](https://appshunter.io/ios/app/flight-co2-calculator/id1442575809)

**Features:** macOS Compatibility

**In-app purchases:** none


### What's Happening

[App page](https://appshunter.io/ios/app/whats-happening/id6503600708)

**In-app purchases:** none


## Frequently asked questions

### Is Flight CO2 Calculator free?

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

### Is What's Happening free?

What's Happening is free to download, with no in-app purchases.

### Do Flight CO2 Calculator or What's Happening have ads?

Neither Flight CO2 Calculator nor What's Happening shows ads.

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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.*