# Fail Run vs Arm Simulator

The clearest difference is update cadence: Arm Simulator at fortnightly against Fail Run's every 5 weeks. Fail Run's advantage is chart position (#205 vs unranked). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Fail Run sells 1 one-off in-app purchase and Arm Simulator sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Fail Run against 4.6 for Arm Simulator. Both are backed by a comparable volume of ratings — 34K and 36K respectively. Written reviews split almost evenly too, at 41% and 42% positive.

Fail Run ships an update every 5 weeks, Arm Simulator fortnightly. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Fail Run | Arm Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (34K ratings)](https://appshunter.io/ios/app/fail-run/id1544772273/reviews)** | [4.6 (36K ratings)](https://appshunter.io/ios/app/arm-simulator/id1603807269/reviews) |
| Number of ratings | 34K | **36K** |
| Positive reviews | 41.4% of reviews | **41.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#205** | — |
| Size | 405 MB | 569 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Voodoo](https://appshunter.io/developer/714804730) | [SUPERSONIC STUDIOS LTD](https://appshunter.io/developer/1499845738) |

## What reviewers say

### Fail Run

[App page](https://appshunter.io/ios/app/fail-run/id1544772273)

**Currently charting:** #205 Top Free · Action (US App Store)

Master the art of walking and avoid falling as you progress through challenging levels. Unlock a variety of outfits and aim to complete as many stages as possible in this physics-based game.

**Highlights:** Learn to walk mechanics, Stumble and fall physics, Unlockable outfits, Multiple levels, Challenging gameplay

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |

**What reviewers like**

- 🤩 Fun and entertaining game
- 👍 Unique and challenging gameplay
- 🥰 Hilarious character animations

**What reviewers complain about**

- 🤬 Excessive ads that interrupt gameplay
- 🐛 Frequent crashes and loading issues
- 🤯 Extremely difficult and frustrating at times

**Reported bugs**

- Game freezes and stops loading after reaching certain levels
- Character movements and physics are inconsistent and glitchy

**Requested features**

- Add a level replay option
- Improve character control and physics
- Reduce the number of ads or offer an ad-free version


### Arm Simulator

[App page](https://appshunter.io/ios/app/arm-simulator/id1603807269)

Experience a humorous physics-based ragdoll game where you control an arm. Navigate through challenging puzzles by skillfully manipulating your limb to achieve objectives.

**Highlights:** Physics-based ragdoll simulation, Arm control mechanics, Puzzle-solving challenges, Funny and humorous gameplay

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |
| Skin Bundle | $3.99 | one-time |
| Story Bundle | $3.99 | one-time |
| Skin & Story Bundle | $5.99 | one-time |

**What reviewers like**

- 😂 Funny and entertaining
- 🤖 Unique and innovative gameplay
- 👍 Satisfactory and engaging

**What reviewers complain about**

- 🔥 Excessive ads and monetization
- 🐛 Glitches and performance issues
- 🤔 Repetitive and lacking challenge

**Reported bugs**

- Arm movement not responsive
- Game crashes after completing levels
- Rewards not properly awarded after watching ads

**Requested features**

- Offline play mode
- More level variety and difficulty options
- Reduced ads or paid ad-free version


## Frequently asked questions

### Is Fail Run free?

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

### Is Arm Simulator free?

Arm Simulator is free to download, with in-app purchases available.

### Which has better reviews, Fail Run or Arm Simulator?

Fail Run is rated higher. Fail Run averages 4.7 out of 5 from 34K ratings, while Arm Simulator averages 4.6 from 36K ratings.

### Do Fail Run or Arm Simulator have ads?

Both Fail Run and Arm Simulator show ads.

### Which is updated more often, Fail Run or Arm Simulator?

Fail Run ships an update every 5 weeks, and Arm Simulator fortnightly. Most recently, Fail Run was updated on September 25, 2026 and Arm Simulator on September 24, 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.*