# Zero Gravity 3D vs Underground Crew 3 Open World

The clearest difference is update cadence: Underground Crew 3 Open World at every 6 weeks against Zero Gravity 3D's every 20 months. Zero Gravity 3D's advantage is iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Zero Gravity 3D ships an update every 20 months, Underground Crew 3 Open World every 6 weeks. The most recent releases landed on September 28, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Zero Gravity 3D | Underground Crew 3 Open World |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (7 ratings)](https://appshunter.io/ios/app/underground-crew-3-open-world/id6736412611/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 69.6% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 20 months | **Every 6 weeks** |
| Monetization | — | Ad-supported |
| Size | 83 MB | 448 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [喜拉 任](https://appshunter.io/developer/1447216936) | [Syed Waqas Ali](https://appshunter.io/developer/1440741644) |

## What reviewers say

### Zero Gravity 3D

[App page](https://appshunter.io/ios/app/zero-gravity-3d/id1476355895)

**Features:** macOS Compatibility

**In-app purchases:** none


### Underground Crew 3 Open World

[App page](https://appshunter.io/ios/app/underground-crew-3-open-world/id6736412611)

Experience open-world car simulation with multiple racing modes, including campaign story, cop smash, and sprint races. Customize vehicles with unique visual and performance upgrades to dominate street racing.

**Highlights:** Open-world car simulator, Multiple racing game modes, Campaign story mode, Vehicle customization system, Sprint races and Cop Smash, Drifting mechanics

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

**In-app purchases:** none


## Frequently asked questions

### Is Zero Gravity 3D free?

Zero Gravity 3D is free to download, with no in-app purchases.

### Is Underground Crew 3 Open World free?

Underground Crew 3 Open World is free to download, with no in-app purchases.

### Do Zero Gravity 3D or Underground Crew 3 Open World have ads?

Both Zero Gravity 3D and Underground Crew 3 Open World show ads.

### Which is updated more often, Zero Gravity 3D or Underground Crew 3 Open World?

Zero Gravity 3D ships an update every 20 months, and Underground Crew 3 Open World every 6 weeks. Most recently, Zero Gravity 3D was updated on September 28, 2026 and Underground Crew 3 Open World on October 18, 2026.

---

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