# 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 (every 4 days 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 every 4 days. The most recent releases landed on October 4, 2026 and October 12, 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 | **Every 4 days** |
| Size | 227 MB | 16 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-block-puzzle/id6753803501)

**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 every 4 days. Most recently, Spatial Ability Assessment was updated on October 4, 2026 and Gridfall 3D on October 12, 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.*