# KnockDown Run vs Muscle Stack

The clearest difference is in-app purchases: Muscle Stack at none against KnockDown Run's 5. KnockDown Run's advantage is update cadence (every 2 months vs every 29 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KnockDown Run sells 5 one-off in-app purchases. Muscle Stack asks for nothing beyond the download.

KnockDown Run ships an update every 2 months, Muscle Stack every 29 months. The most recent releases landed on September 28, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | KnockDown Run | Muscle Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knockdown-run/id1570795633/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 29 months |
| Monetization | Free with in-app purchases | — |
| Size | 83 MB | 84 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Supercode Games](https://appshunter.io/developer/1539592590) | [omer cetin](https://appshunter.io/developer/1584332419) |

## What reviewers say

### KnockDown Run

[App page](https://appshunter.io/ios/app/knockdown-run/id1570795633)

A skill-based hyper-casual runner where you persistently knock down obstacles to reach the end of levels and achieve high scores. Manage your balls and enjoy changing environments with immersive haptic feedback and unique animations.

**Highlights:** Skill-based hyper-casual runner, Knock down obstacles, Manage ball count for high scores, Multiple environment changes, Haptic feedback, Unique animations

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |
| Handful of Gems | $0.99 | one-time |
| Bag of Gems | $1.99 | one-time |
| Bucket of Gems | $2.99 | one-time |
| Chest of Gems | $3.99 | one-time |


### Muscle Stack

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KnockDown Run free?

KnockDown Run is free to download, with in-app purchases available.

### Is Muscle Stack free?

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

### Do KnockDown Run or Muscle Stack have ads?

Both KnockDown Run and Muscle Stack show ads.

### Which is updated more often, KnockDown Run or Muscle Stack?

KnockDown Run ships an update every 2 months, and Muscle Stack every 29 months. Most recently, KnockDown Run was updated on September 28, 2026 and Muscle Stack on September 21, 2026.

---

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