# Intro To Reading by Oz Phonics vs Grass Fire

The clearest difference is price: Grass Fire at Free against Intro To Reading by Oz Phonics's $1.99. Grass Fire also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.6). Intro To Reading by Oz Phonics's advantage is rating (5.0 vs 1.0) and update cadence (every 4 months vs every 15 months). On ratings volume, ads and in-app purchases there is nothing between them.

Grass Fire is free to download; Intro To Reading by Oz Phonics costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Intro To Reading by Oz Phonics holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Intro To Reading by Oz Phonics ships an update every 4 months, Grass Fire every 15 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Intro To Reading by Oz Phonics | Grass Fire |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/intro-to-reading-by-oz-phonics/id556500708/reviews)** | [1.0 (3 ratings)](https://appshunter.io/ios/app/grass-fire/id1440445499/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 15 months |
| Monetization | Paid | **Free** |
| Size | 29 MB | 66 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DSP Learning Pty Ltd](https://appshunter.io/developer/556500951) | [arludo Pty Ltd](https://appshunter.io/developer/1023251086) |

## What reviewers say

### Intro To Reading by Oz Phonics

[App page](https://appshunter.io/ios/app/intro-to-reading-by-oz-phonics/id556500708)

This app teaches foundational reading and spelling skills using a phonics-based system. It introduces letter-sound relationships through interactive games and exercises, suitable for children and adults learning to read.

**Highlights:** Introduces 15 letter/sound relationships, Interactive exercises for listening and matching sounds, Teaches sound-to-letter and letter-to-sound association, Guided word-building exercises, Word reading tests, Supports American, British, Australian, and NZ accents

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Intro To Reading by Oz Phonics free?

Intro To Reading by Oz Phonics costs $1.99, with no in-app purchases.

### Is Grass Fire free?

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

### Which has better reviews, Intro To Reading by Oz Phonics or Grass Fire?

Intro To Reading by Oz Phonics is rated higher. Intro To Reading by Oz Phonics averages 5.0 out of 5 from 2 ratings, while Grass Fire averages 1.0 from 3 ratings.

### Do Intro To Reading by Oz Phonics or Grass Fire have ads?

Neither Intro To Reading by Oz Phonics nor Grass Fire shows ads.

### Which is updated more often, Intro To Reading by Oz Phonics or Grass Fire?

Intro To Reading by Oz Phonics ships an update every 4 months, and Grass Fire every 15 months. Most recently, Intro To Reading by Oz Phonics was updated on November 6, 2026 and Grass Fire on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*