# Gun Builder Custom Guns vs Gun Builder 3D Simulator

The clearest difference is rating: Gun Builder Custom Guns at 4.5 against Gun Builder 3D Simulator's 4.2. Gun Builder Custom Guns also leads on review sentiment (64% vs 43%) and update cadence (every 5 weeks vs every 4 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Gun Builder Custom Guns sells 1 one-off in-app purchase and Gun Builder 3D Simulator sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Gun Builder Custom Guns holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Gun Builder Custom Guns has 1.6K ratings behind it against 283, so its average is the more settled of the two. Written reviews point the same way: 64% of Gun Builder Custom Guns's written reviews are positive against 43% of Gun Builder 3D Simulator's.

Gun Builder Custom Guns ships an update every 5 weeks, Gun Builder 3D Simulator every 4 months. The most recent releases landed on September 19, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Gun Builder Custom Guns | Gun Builder 3D Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.6K ratings)](https://appshunter.io/ios/app/gun-builder-custom-guns/id1074243262/reviews)** | [4.2 (283 ratings)](https://appshunter.io/ios/app/gun-builder-3d-simulator/id1377948764/reviews) |
| Number of ratings | **1.6K** | 283 |
| Positive reviews | **63.7% of reviews** | 42.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 150 MB | 434 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Gravity Code](https://appshunter.io/developer/1554824125) | [Dimitri Liwenetz](https://appshunter.io/developer/1696108961) |

## 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


### Gun Builder 3D Simulator

[App page](https://appshunter.io/ios/app/gun-builder-3d-simulator/id1377948764)

Design and customize your own firearms in a 3D simulator. Equip them with various accessories and test their accuracy in virtual shooting galleries. Share your creations with friends for virtual battles.

**Highlights:** Design custom firearms, Add accessories and skins, Realistic shooting sounds and effects, Virtual shooting gallery, Share weapon designs, Play virtual battles

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No ads | $1.99 | one-time |
| All weapons and upgrades | $5.99 | one-time |

**What reviewers like**

- 👍 Good gun simulator
- 👍 Fun gameplay
- 👍 Good animations
- 👍 Decent disassembly/assembly
- 👍 Good representation of hipfiring

**What reviewers complain about**

- 😞 Too many ads
- 😞 Ads are intrusive
- 😞 Missing key factors
- 😞 Horrible physics
- 😞 Fake advertising

**Reported bugs**

- Wouldn't let me unlock locked guns
- Slide not locking back when mag is empty (pistols)
- Charging handle moves back when out of ammo
- Reload glitch with magazine floating in air
- Startup crashing on iPhone 5 iOS 10.3.4

**Requested features**

- Unlock locked guns
- More guns (sniper, Glock 17, MP5, AK74, HK417)
- Add Mac gun
- Weapon cycling
- Press and release animation for bolt catch


## Frequently asked questions

### Is Gun Builder Custom Guns free?

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

### Is Gun Builder 3D Simulator free?

Gun Builder 3D Simulator is free to download, with in-app purchases available.

### Which has better reviews, Gun Builder Custom Guns or Gun Builder 3D Simulator?

Gun Builder Custom Guns is rated higher. Gun Builder Custom Guns averages 4.5 out of 5 from 1.6K ratings, while Gun Builder 3D Simulator averages 4.2 from 283 ratings.

### Do Gun Builder Custom Guns or Gun Builder 3D Simulator have ads?

Both Gun Builder Custom Guns and Gun Builder 3D Simulator show ads.

### Which is updated more often, Gun Builder Custom Guns or Gun Builder 3D Simulator?

Gun Builder Custom Guns ships an update every 5 weeks, and Gun Builder 3D Simulator every 4 months. Most recently, Gun Builder Custom Guns was updated on September 19, 2026 and Gun Builder 3D Simulator on September 18, 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.*