# Gun Building 3 vs Grenade Gun Simulator

The clearest difference is rating: Gun Building 3 at 4.1 against Grenade Gun Simulator's 2.6. Gun Building 3 also leads on ratings volume (3.4K vs 5). Grenade Gun Simulator's advantage is in-app purchases (none vs 9) and iOS requirement (7.1 vs 12.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Gun Building 3 sells 9 one-off in-app purchases. Grenade Gun Simulator asks for nothing beyond the download.

Gun Building 3 holds the better App Store score, 4.1 against 2.6. That said, the two scores are not equally well evidenced: Gun Building 3 has 3.4K ratings behind it against 5, so its average is the more settled of the two.

Gun Building 3 ships an update every 2 weeks, Grenade Gun Simulator every 8 days. Both last shipped on November 1, 2026.

## The numbers

| Metric | Gun Building 3 | Grenade Gun Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (3.4K ratings)](https://appshunter.io/ios/app/gun-building-3/id423087478/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/grenade-gun-simulator/id874250663/reviews) |
| Number of ratings | **3.4K** | 5 |
| Positive reviews | 61.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 279 MB | 37 MB |
| Requires iOS | 12.0 | **7.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [yizhan ye](https://appshunter.io/developer/364246865) | [Denis Ivanov](https://appshunter.io/developer/874250666) |

## What reviewers say

### Gun Building 3

[App page](https://appshunter.io/ios/app/gun-building-3/id423087478)

Design and customize your own firearms in 3D, from intricate internal parts to external skins. Create realistic animations and sounds for your creations, then take them into FPS games.

**Highlights:** Build and fully customize guns, Create realistic animations, Customize gun sounds, Personalize weapon skins, Huge selection of parts and attachments, Integrate with FPS games

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all camo | $1.99 | one-time |
| Unlock Pistol | $2.99 | one-time |
| Unlock SMG | $2.99 | one-time |
| Unlock Shotgun | $2.99 | one-time |
| Unlock LMG | $2.99 | one-time |
| Unlock Sniper | $2.99 | one-time |
| Unlock Melee | $2.99 | one-time |
| Unlock Grenade | $2.99 | one-time |
| Unlock All | $13.99 | one-time |

**What reviewers like**

- 👍 Highly customizable guns
- 🚀 Impressive level of detail
- 💡 Ability to set custom sounds, ammo, fire rate, and animations
- 👍 Fun and creative gun building experience

**What reviewers complain about**

- 💰 Microtransactions for additional guns and attachments can be excessive
- 🔒 Limited to only assault rifles without purchasing additional gun packs
- 🐛 Some inaccuracies in gun models and attachments
- 🐛 Glitchy movement and aiming controls in certain game modes

**Reported bugs**

- Restore Purchases button not working
- Shotgun and melee weapon functionality issues
- Scope camos making sights unusable

**Requested features**

- Add more free gun types beyond just assault rifles
- Improve realism of gun sounds and animations
- Implement a joystick or better movement controls
- Bring back previous game modes like camera mode and strategy/tactics
- Add more gun variety like SMGs, DMRs, and older/historical firearms


### Grenade Gun Simulator

[App page](https://appshunter.io/ios/app/grenade-gun-simulator/id874250663)

Simulate grenade explosions and weapon sounds with friends. Point your device like a launcher and pull the trigger for realistic effects. Features various grenade weapons with unique sounds.

**Highlights:** Grenade explosions and sounds, Weapon simulation, Realistic sound effects, Play with friends, Multiple grenade weapons

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gun Building 3 free?

Gun Building 3 is free to download, with in-app purchases available.

### Is Grenade Gun Simulator free?

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

### Which has better reviews, Gun Building 3 or Grenade Gun Simulator?

Gun Building 3 is rated higher. Gun Building 3 averages 4.1 out of 5 from 3.4K ratings, while Grenade Gun Simulator averages 2.6 from 5 ratings.

### Do Gun Building 3 or Grenade Gun Simulator have ads?

Neither Gun Building 3 nor Grenade Gun Simulator shows ads.

### Which is updated more often, Gun Building 3 or Grenade Gun Simulator?

Gun Building 3 ships an update every 2 weeks, and Grenade Gun Simulator every 8 days. Most recently, Gun Building 3 was updated on November 1, 2026 and Grenade Gun Simulator on November 1, 2026.

---

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