# Grass Fire vs Area Sense Test

The clearest difference is update cadence: Area Sense Test at daily against Grass Fire's every 15 months. Grass Fire's advantage is iOS requirement (12.0 vs 15.1). 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.

Grass Fire ships an update every 15 months, Area Sense Test daily. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Grass Fire | Area Sense Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/grass-fire/id1440445499/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Daily** |
| Monetization | Free | — |
| Size | 66 MB | 31 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [arludo Pty Ltd](https://appshunter.io/developer/1023251086) | [pilyeong heo](https://appshunter.io/developer/1835315150) |

## What reviewers say

### Grass Fire

[App page](https://appshunter.io/ios/app/grass-fire/id1440445499)

This educational app explores how the human brain interprets visual shapes. It's designed to help users understand the cognitive processes behind shape recognition and perception.

**Highlights:** Understanding shape interpretation, Cognitive process exploration, Visual perception testing, Educational content

**Features:** macOS Compatibility

**In-app purchases:** none


### Area Sense Test

[App page](https://appshunter.io/ios/app/area-sense-test-shape-iq/id6763694163)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grass Fire free?

Grass Fire is free to download, with no in-app purchases.

### Is Area Sense Test free?

Area Sense Test is free to download, with no in-app purchases.

### Do Grass Fire or Area Sense Test have ads?

Neither Grass Fire nor Area Sense Test shows ads.

### Which is updated more often, Grass Fire or Area Sense Test?

Grass Fire ships an update every 15 months, and Area Sense Test daily. Most recently, Grass Fire was updated on October 29, 2026 and Area Sense Test on October 28, 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.*