# Zero Gravity 3D vs Robot Fire Truck Driver

The clearest difference is update cadence: Robot Fire Truck Driver at every 4 months against Zero Gravity 3D's every 20 months. Zero Gravity 3D's advantage is iOS requirement (10.0 vs 12.0). 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, Robot Fire Truck Driver every 4 months. The most recent releases landed on September 28, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Zero Gravity 3D | Robot Fire Truck Driver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (19 ratings)](https://appshunter.io/ios/app/robot-fire-truck-driver/id1490375902/reviews)** |
| Number of ratings | — | **19** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 20 months | **Every 4 months** |
| Monetization | — | Ad-supported |
| Size | 83 MB | 220 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [喜拉 任](https://appshunter.io/developer/1447216936) | [Squad Cell](https://appshunter.io/developer/1445417414) |

## What reviewers say

### Zero Gravity 3D

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Robot Fire Truck Driver

[App page](https://appshunter.io/ios/app/robot-fire-truck-driver/id1490375902)

Transform into a flying robot and then a fire truck to rescue citizens and animals from fires. Become a hero by completing city rescue missions where traditional fire brigades can't reach.

**Highlights:** Robot transformation, Fire truck driving, City rescue missions, Save citizens and animals, Flying robot capabilities

**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 Robot Fire Truck Driver free?

Robot Fire Truck Driver is free to download, with no in-app purchases.

### Do Zero Gravity 3D or Robot Fire Truck Driver have ads?

Both Zero Gravity 3D and Robot Fire Truck Driver show ads.

### Which is updated more often, Zero Gravity 3D or Robot Fire Truck Driver?

Zero Gravity 3D ships an update every 20 months, and Robot Fire Truck Driver every 4 months. Most recently, Zero Gravity 3D was updated on September 28, 2026 and Robot Fire Truck Driver on October 13, 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.*