# Gun Builder Custom Guns vs Gun Assembly

Gun Builder Custom Guns and Gun Assembly both sit at 4.5 stars, but that hides the real split: 66% of Gun Builder Custom Guns's written reviews are positive against 29% of Gun Assembly's. Gun Builder Custom Guns also leads on ratings volume (1.7K vs 323). Gun Assembly's advantage is in-app purchases (none vs 1) and update cadence (every 4 days vs every 5 weeks). On price, rating, 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. Gun Assembly asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for Gun Builder Custom Guns against 4.6 for Gun Assembly. That said, the two scores are not equally well evidenced: Gun Builder Custom Guns has 1.7K ratings behind it against 323, so its average is the more settled of the two. Written reviews are what separate them: 66% of Gun Builder Custom Guns's written reviews are positive against 29% of Gun Assembly's.

Gun Builder Custom Guns ships an update every 5 weeks, Gun Assembly every 4 days. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Gun Builder Custom Guns | Gun Assembly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (1.7K ratings)](https://appshunter.io/ios/app/gun-builder-custom-guns/id1074243262/reviews) | **[4.6 (323 ratings)](https://appshunter.io/ios/app/gun-assembly/id6444002089/reviews)** |
| Number of ratings | **1.7K** | 323 |
| Positive reviews | **65.6% of reviews** | 28.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 150 MB | 246 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) | [Besim Toker](https://appshunter.io/developer/1572847425) |

## 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 Assembly

[App page](https://appshunter.io/ios/app/gun-assembly/id6444002089)

Assemble and customize a wide variety of guns by tapping to earn money and unlock new mods. Open loot boxes to acquire awesome upgrades and assemble legendary items to create the ultimate firearm.

**Highlights:** Tap to earn money, Open loot boxes, Acquire awesome mods, Customize gun aspects, Assemble legendary items

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

**In-app purchases:** none


## Frequently asked questions

### Is Gun Builder Custom Guns free?

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

### Is Gun Assembly free?

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

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

Gun Assembly is rated higher. Gun Builder Custom Guns averages 4.5 out of 5 from 1.7K ratings, while Gun Assembly averages 4.6 from 323 ratings.

### Do Gun Builder Custom Guns or Gun Assembly have ads?

Both Gun Builder Custom Guns and Gun Assembly show ads.

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

Gun Builder Custom Guns ships an update every 5 weeks, and Gun Assembly every 4 days. Most recently, Gun Builder Custom Guns was updated on October 29, 2026 and Gun Assembly on October 21, 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.*