# Gun Builder Custom Guns vs Arm Gun Simulator

The clearest difference is rating: Gun Builder Custom Guns at 4.5 against Arm Gun Simulator's 3.7. Gun Builder Custom Guns also leads on review sentiment (66% vs 34%) and update cadence (every 5 weeks vs every 21 months). Arm Gun Simulator's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 13.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Gun Builder Custom Guns sells 1 one-off in-app purchase. Arm Gun Simulator asks for nothing beyond the download.

Gun Builder Custom Guns holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 1.7K and 2.8K respectively. Written reviews point the same way: 66% of Gun Builder Custom Guns's written reviews are positive against 34% of Arm Gun Simulator's.

Gun Builder Custom Guns ships an update every 5 weeks, Arm Gun Simulator every 21 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | Gun Builder Custom Guns | Arm Gun Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.7K ratings)](https://appshunter.io/ios/app/gun-builder-custom-guns/id1074243262/reviews)** | [3.7 (2.8K ratings)](https://appshunter.io/ios/app/arm-gun-simulator/id1354918944/reviews) |
| Number of ratings | 1.7K | **2.8K** |
| Positive reviews | **65.6% of reviews** | 34.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 21 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 150 MB | 67 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Gravity Code](https://appshunter.io/developer/1554824125) | [Alexandra Nartova](https://appshunter.io/developer/1352887623) |

## What reviewers say

### Gun Builder Custom Guns

[App page](https://appshunter.io/ios/app/gun-builder-custom-guns/id1074243262)

Design and build your own unique virtual pistols with a vast selection of parts. Once created, you can fire your custom weapons with unlimited ammo and realistic sound and visual effects.

**Highlights:** Build custom pistols, Huge selection of pistol parts, Shoot from custom pistols, Unlimited ammo, Realistic gun sound effects, High resolution graphics, Share custom pistols on social media

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | $5.99 | one-time |

**What reviewers like**

- 🚀 Good game to pass the time
- 👍 Realistic
- 👍 Customization options
- 👍 Enjoyable

**What reviewers complain about**

- 🐛 Shooting issues
- 🐛 Lack of weapon variety
- 🐛 Frequent ads
- 💰 Paid content locked

**Reported bugs**

- Sound issues
- Crashes and freezes
- Paid content not working as expected

**Requested features**

- Add more weapon types (AR, sniper, SMG, grenades)
- Improve shooting mechanics
- Reduce ads or make them optional
- Unlock more content for free


### Arm Gun Simulator

[App page](https://appshunter.io/ios/app/arm-gun-simulator/id1354918944)

Experience a thrilling western shootout where you must be a fast and precise shooter to survive. Load your weapon, aim, and defend yourself in intense standoffs. Train your skills to become the quickest cowboy in town.

**Highlights:** Realistic and intuitive hand controls, Unlockable handgun models, Numerous attachments for precision shooting, Multiple difficulty levels, Atmospheric western saloon environment

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to play
- 😊 Fun and addictive
- 💡 Potential for improvements

**What reviewers complain about**

- 🐛 Unresponsive controls
- 🤖 Overpowered AI opponent
- 💰 Excessive ads
- 🤔 Lack of content and features

**Reported bugs**

- Camera drifting issues
- Inconsistent aim and targeting
- Incompatibility with certain devices

**Requested features**

- More guns and attachments
- Multiplayer mode
- Difficulty settings
- Leaderboards and stats tracking


## Frequently asked questions

### Is Gun Builder Custom Guns free?

Gun Builder Custom Guns is free to download, with in-app purchases available.

### Is Arm Gun Simulator free?

Arm Gun Simulator is free to download, with no in-app purchases.

### Which has better reviews, Gun Builder Custom Guns or Arm Gun Simulator?

Gun Builder Custom Guns is rated higher. Gun Builder Custom Guns averages 4.5 out of 5 from 1.7K ratings, while Arm Gun Simulator averages 3.7 from 2.8K ratings.

### Do Gun Builder Custom Guns or Arm Gun Simulator have ads?

Both Gun Builder Custom Guns and Arm Gun Simulator show ads.

### Which is updated more often, Gun Builder Custom Guns or Arm Gun Simulator?

Gun Builder Custom Guns ships an update every 5 weeks, and Arm Gun Simulator every 21 months. Most recently, Gun Builder Custom Guns was updated on November 2, 2026 and Arm Gun Simulator on November 2, 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.*