# PolyFill vs Spatial Ability Assessment

The clearest difference is in-app purchases: Spatial Ability Assessment at none against PolyFill's 3. Spatial Ability Assessment also leads on ads (none vs shown) and iOS requirement (10.0 vs 14.0). PolyFill's advantage is update cadence (every 6 months vs every 12 months). On price and device support there is nothing between them.

Both are free to download. PolyFill sells 3 one-off in-app purchases. Spatial Ability Assessment asks for nothing beyond the download.

PolyFill ships an update every 6 months, Spatial Ability Assessment every 12 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | PolyFill | Spatial Ability Assessment |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/polyfill/id987147033/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 15 MB | 227 MB |
| Requires iOS | 14.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Kelly Technology Inc.](https://appshunter.io/developer/393931941) | [Jon-Chao Hong](https://appshunter.io/developer/547495524) |

## What reviewers say

### PolyFill

[App page](https://appshunter.io/ios/app/polyfill/id987147033)

A brain-training puzzle game where you race against the clock to assemble geometric shapes. Earn points based on difficulty and speed, and compete on leaderboards. Unlock additional complexity and scoring through optional in-app purchases.

**Highlights:** Brain-training puzzles, Timed challenges, Geometric shape assembly, Scoring based on difficulty and time, Game Center leaderboards, Achievement awards, In-app purchases for complexity

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads. | $1.99 | one-time |
| Unlock level 2 | $1.99 | one-time |
| Unlock level 3 | $1.99 | one-time |


### Spatial Ability Assessment

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PolyFill free?

PolyFill is free to download, with in-app purchases available.

### Is Spatial Ability Assessment free?

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

### Do PolyFill or Spatial Ability Assessment have ads?

PolyFill shows ads; Spatial Ability Assessment does not.

### Which is updated more often, PolyFill or Spatial Ability Assessment?

PolyFill ships an update every 6 months, and Spatial Ability Assessment every 12 months. Most recently, PolyFill was updated on October 6, 2026 and Spatial Ability Assessment on October 4, 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.*