# Muscle Stack vs Jetpack City

The clearest difference is update cadence: Jetpack City at every 6 days against Muscle Stack's every 29 months. 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.

Muscle Stack ships an update every 29 months, Jetpack City every 6 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Muscle Stack | Jetpack City |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 29 months | **Every 6 days** |
| Size | 84 MB | 154 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [omer cetin](https://appshunter.io/developer/1584332419) | [Emre Tuner](https://appshunter.io/developer/1607743509) |

## What reviewers say

### Muscle Stack

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Jetpack City

[App page](https://appshunter.io/ios/app/jetpack-city/id1621860440)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Muscle Stack free?

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

### Is Jetpack City free?

Jetpack City is free to download, with no in-app purchases.

### Do Muscle Stack or Jetpack City have ads?

Both Muscle Stack and Jetpack City show ads.

### Which is updated more often, Muscle Stack or Jetpack City?

Muscle Stack ships an update every 29 months, and Jetpack City every 6 days. Most recently, Muscle Stack was updated on October 8, 2026 and Jetpack City on October 11, 2026.

---

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