Comparison

Oz Phonics 3 vs Grass Fire

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Oz Phonics 3

This app reinforces phonics skills with 12 interactive sections focusing on consonant blends and digraphs. It includes word games, spelling tests, and exercises designed to improve reading and spelling for young learners. Free accompanying worksheets are available online.

Highlights
  • 12 phonics reinforcement sections
  • Consonant blend and digraph introduction
  • Word finder game with sound-out feature
  • Spelling tests for CVC and CCVC words
  • Phoneme deletion exercises
  • Practice with 's' making /z/ sound
  • Covers digraphs like 'ch', 'sh', 'th'
Features
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Oz Phonics 3 has 12 sections that revise and reinforce the lessons in Oz Phonics1 and 2, and introduces more blends and digraphs (two letters producing one sound). As with Oz Phonics 1 and 2, it is advisable to work through each of the 12 sections, repeating where necessary. Move on when the student has a good idea – not necessarily a perfect grasp – of each section. PARENT/TEACHER HELP FOR BEGINNING READERS IS INVALUABLE!! Visit ozphonics.com for free worksheets to accompany this and earlier apps. 1.Word Finder Based on the traditional find-a-word game, phonics find-a-word "sounds out" the word when the student correctly locates it. The word is selected by sliding a finger across or down the matching letters. Many students will find this activity difficult until they learn a methodical search method (look for first letter, looking for surrounding second letters etc.). 2.Spelling CVC (Pen and Paper) 10 spelling tests comprised of 12 CVC words each. The students can tap on each of the 12 tiles to hear the words. The student should then write the word on a piece of paper. This is an exercise in both spelling and handwriting. Students should be encouraged to approach this task in step by step: listen to the word, break it up into sounds, then write a letter for each of those sounds. Despite Oz Phonics being an iPad based system it is important that handwriting is practiced as part of the learn to read process. 3.Spelling CCVC (Pen and Paper) As with exercise 2 but now with CCVC words. Note that these CCVC words are all 4-sound words - there are no digraphs (sh, ch, th etc. ). 4. End Blends Oz Phonics 2 introduced some beginning consonant blends, now we introduce 14 end consonant blends. All the blends here can be derived from the individual sounds introduced in Oz Phonics 1. ESL students often have difficulty with consonant blends and so we practise(practice) them specifically to make sure individual sounds can be both heard and pronounced together. 5. Missing 3rd letter CVCC An exercise in identifying the 3rd sound in a CVCC word. Note there are no digraphs in this exercise, all words have 4 sounds - noting that the 'x' sound,/ks/ (actually two sounds) is treated as one unit. 6.Missing 4th letter CVCC As with previous exercise but now with the end sound missing. 7. Find a word CVCC As with exercise 1 but now with CVCC words. 8.3rd phoneme deletion Delete 3rd sound from 4 sound CVCC. Example. "What word do you get if you take away the /n/ sound from the word "bend". Answer 'bed'. 9. Spelling CVCC - Pen and Paper. As with exercises 2 and 3 but now CVCC words. 10. when s makes the /z/ sound. Here we provide examples of where the letter 's' can be used to make the /z/ sound. 11.Digraphs (two letters making one sound) Here we provide examples of two letter combinations used to represent a single sound. 'ch', 'ck', 'ph', 'sh', 'th', 'th'(voiced) and 'wh' are covered. Note that the 'ch' letter combination can also make /sh/ sound but we don't cover it here. The '-' in front of 'ck' indicated that this digraph can not be used at the start of a word. 12.Digraphs Exercise An exercise in choosing a digraph to complete a word. The student can tap on the options to here the sounds they can make.

About

Grass Fire

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
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Grass Fire helps players understand how our brains understand what shapes represent.

Screenshots

Grass Fire4 screens

Verdict

The call

The clearest difference is price: Grass Fire at Free against Oz Phonics 3's $2.99. Grass Fire also leads on device support (3 vs 1) and ratings volume (3 vs 1). Oz Phonics 3's advantage is rating (3.0 vs 1.0). On update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Grass Fire is free to download; Oz Phonics 3 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Oz Phonics 3 holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

Oz Phonics 3 ships an update every 14 months, Grass Fire every 15 months. The most recent releases landed on October 3, 2026 and October 29, 2026 respectively.

Scorecard6 real differences · 4 level
Oz Phonics 3 versus Grass Fire: the parameters behind the verdict, then further details
ParameterOz Phonics 3Grass Fire
Price$2.99Free — better
Rating3.0 (1 ratings) — better1.0 (3 ratings)
Positive reviews50.0% of reviews—
Number of ratings13 — better
Update frequencyEvery 14 months — betterEvery 15 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPadiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size74 MB66 MB
Age rating4+4+
DeveloperDSP Learning Pty Ltdarludo Pty Ltd

Customer experience

Oz Phonics 3

All ratings1 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

Grass Fire

All ratings3 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Oz Phonics 3

No in-app purchases

None

Grass Fire

No in-app purchases

Questions

Is Oz Phonics 3 free?
Oz Phonics 3 costs $2.99, with no in-app purchases.
Is Grass Fire free?
Grass Fire is free to download, with no in-app purchases.
Which has better reviews, Oz Phonics 3 or Grass Fire?
Oz Phonics 3 is rated higher. Oz Phonics 3 averages 3.0 out of 5 from 1 ratings, while Grass Fire averages 1.0 from 3 ratings.
Do Oz Phonics 3 or Grass Fire have ads?
Neither Oz Phonics 3 nor Grass Fire shows ads.
Which is updated more often, Oz Phonics 3 or Grass Fire?
Oz Phonics 3 ships an update every 14 months, and Grass Fire every 15 months. Most recently, Oz Phonics 3 was updated on October 3, 2026 and Grass Fire on October 29, 2026.

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