# Spatial Ability Assessment vs Gridfall 3D

The clearest difference is ads: Spatial Ability Assessment at none against Gridfall 3D's shown. Spatial Ability Assessment also leads on iOS requirement (10.0 vs 15.6). Gridfall 3D's advantage is update cadence (weekly vs every 12 months). On price, 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.

Spatial Ability Assessment ships an update every 12 months, Gridfall 3D weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Spatial Ability Assessment | Gridfall 3D |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Weekly** |
| Size | 227 MB | 18 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jon-Chao Hong](https://appshunter.io/developer/547495524) | [箫 王](https://appshunter.io/developer/1841884894) |

## What reviewers say

### Spatial Ability Assessment

[App page](https://appshunter.io/ios/app/spatial-ability-assessment/id1444258668)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gridfall 3D

[App page](https://appshunter.io/ios/app/gridfall-3d-falling-blocks/id6753803501)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spatial Ability Assessment free?

Spatial Ability Assessment is free to download, with no in-app purchases.

### Is Gridfall 3D free?

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

### Do Spatial Ability Assessment or Gridfall 3D have ads?

Gridfall 3D shows ads; Spatial Ability Assessment does not.

### Which is updated more often, Spatial Ability Assessment or Gridfall 3D?

Spatial Ability Assessment ships an update every 12 months, and Gridfall 3D weekly. Most recently, Spatial Ability Assessment was updated on October 26, 2026 and Gridfall 3D on October 24, 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.*