# Diesel CO2 vs First Player

The clearest difference is in-app purchases: Diesel CO2 at none against First Player's 1. First Player's advantage is update cadence (every 5 days vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. First Player sells 1 one-off in-app purchase. Diesel CO2 asks for nothing beyond the download.

Diesel CO2 ships an update every 10 months, First Player every 5 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Diesel CO2 | First Player |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 days** |
| Size | 2 MB | 3 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Addison Mai](https://appshunter.io/developer/391450820) | [Gary Watson](https://appshunter.io/developer/1536272323) |

## What reviewers say

### Diesel CO2

[App page](https://appshunter.io/ios/app/diesel-co2/id471325738)

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

**In-app purchases:** none


### First Player

[App page](https://appshunter.io/ios/app/first-player-picker/id1536272321)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Leave a tip | $0.99 | one-time |


## Frequently asked questions

### Is Diesel CO2 free?

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

### Is First Player free?

First Player is free to download, with in-app purchases available.

### Do Diesel CO2 or First Player have ads?

Neither Diesel CO2 nor First Player shows ads.

### Which is updated more often, Diesel CO2 or First Player?

Diesel CO2 ships an update every 10 months, and First Player every 5 days. Most recently, Diesel CO2 was updated on October 15, 2026 and First Player on October 12, 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.*