# Muscle Stack vs Car Derby

The clearest difference is in-app purchases: Muscle Stack at none against Car Derby's 10. Car Derby's advantage is update cadence (every 6 days vs every 29 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Car Derby sells 10 one-off in-app purchases. Muscle Stack asks for nothing beyond the download.

Muscle Stack ships an update every 29 months, Car Derby every 6 days. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Muscle Stack | Car Derby |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/car-derby/id6474818349/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 29 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 84 MB | 771 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [omer cetin](https://appshunter.io/developer/1584332419) | [Shailay Investment Group Inc.](https://appshunter.io/developer/1287272225) |

## What reviewers say

### Muscle Stack

[App page](https://appshunter.io/ios/app/muscle-stack/id1604565712)

**Features:** macOS Compatibility

**In-app purchases:** none


### Car Derby

[App page](https://appshunter.io/ios/app/car-derby/id6474818349)

Engage in a chaotic battle royale racing game where you must be the last car standing. Select unique vehicles, conquer checkpoints on treacherous platforms, and outmaneuver opponents in dynamic arenas. Adapt to changing zones and use power-ups to survive.

**Highlights:** Battle royale racing gameplay, Fleet of unique cars with powers, Dynamic and treacherous platforms, Checkpoint conquering objectives, Vehicular combat and power-ups, Adapting to new zones, Multiplayer matches

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Cash | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Skip Jackpot Wait | $1.99 | one-time |
| 5,000 Cash | $2.99 | one-time |
| 12,500 Cash | $6.99 | one-time |
| 52,500 Cash | $14.99 | one-time |
| 115,000 Cash | $19.99 | one-time |
| 225,000 Cash | $29.99 | one-time |
| 450,000 Cash | $44.99 | one-time |
| 800,000 Cash | $99.99 | one-time |


## Frequently asked questions

### Is Muscle Stack free?

Muscle Stack is free to download, with no in-app purchases.

### Is Car Derby free?

Car Derby is free to download, with in-app purchases available.

### Do Muscle Stack or Car Derby have ads?

Both Muscle Stack and Car Derby show ads.

### Which is updated more often, Muscle Stack or Car Derby?

Muscle Stack ships an update every 29 months, and Car Derby every 6 days. Most recently, Muscle Stack was updated on October 8, 2026 and Car Derby on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*