# Grass Fire vs Decodable Readers L5&6

The clearest difference is price: Grass Fire at Free against Decodable Readers L5&6's $15.99. Grass Fire also leads on iOS requirement (12.0 vs 14.1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Grass Fire is free to download; Decodable Readers L5&6 costs $15.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Grass Fire ships an update every 15 months, Decodable Readers L5&6 every 18 months. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Grass Fire | Decodable Readers L5&6 |
| --- | --- | --- |
| Price | **Free** | $15.99 |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/grass-fire/id1440445499/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 18 months |
| Monetization | **Free** | Paid |
| Size | 66 MB | 993 MB |
| Requires iOS | **12.0** | 14.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [arludo Pty Ltd](https://appshunter.io/developer/1023251086) | [Decodable Readers Australia](https://appshunter.io/developer/1291420175) |

## 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


### Decodable Readers L5&6

[App page](https://appshunter.io/ios/app/decodable-readers-l5-and-6/id1484302346)

This app provides a systematic approach to learning to read for children, using decodable books that introduce new sounds progressively. It includes audio support, pre-reading activities, and post-reading comprehension exercises.

**Highlights:** Systematic phonic reading approach, Progressive sound introduction, Audio support with word tapping, Pre-reading activities, Post-reading comprehension exercises, Controlled audio function per page

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Grass Fire free?

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

### Is Decodable Readers L5&6 free?

Decodable Readers L5&6 costs $15.99, with no in-app purchases.

### Do Grass Fire or Decodable Readers L5&6 have ads?

Neither Grass Fire nor Decodable Readers L5&6 shows ads.

### Which is updated more often, Grass Fire or Decodable Readers L5&6?

Grass Fire ships an update every 15 months, and Decodable Readers L5&6 every 18 months. Most recently, Grass Fire was updated on November 2, 2026 and Decodable Readers L5&6 on November 6, 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.*