# Scouting camp CO2 budget vs FOUR Carpool

The clearest difference is update cadence: FOUR Carpool at every 3 days against Scouting camp CO2 budget's every 3 months. Scouting camp CO2 budget's advantage is device support (4 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Scouting camp CO2 budget ships an update every 3 months, FOUR Carpool every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Scouting camp CO2 budget | FOUR Carpool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Size | 1 MB | 48 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jerome Kasparian](https://appshunter.io/developer/1528196195) | [Manish Kalal](https://appshunter.io/developer/1704610339) |

## What reviewers say

### Scouting camp CO2 budget

[App page](https://appshunter.io/ios/app/scouting-camp-co2-budget/id1645719853)

**In-app purchases:** none


### FOUR Carpool

[App page](https://appshunter.io/ios/app/four-carpool/id6759831653)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Scouting camp CO2 budget free?

Scouting camp CO2 budget is free to download, with no in-app purchases.

### Is FOUR Carpool free?

FOUR Carpool is free to download, with no in-app purchases.

### Do Scouting camp CO2 budget or FOUR Carpool have ads?

Neither Scouting camp CO2 budget nor FOUR Carpool shows ads.

### Which is updated more often, Scouting camp CO2 budget or FOUR Carpool?

Scouting camp CO2 budget ships an update every 3 months, and FOUR Carpool every 3 days. Most recently, Scouting camp CO2 budget was updated on October 25, 2026 and FOUR Carpool 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.*