Comparison

Decodable Readers Australia L4 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

Decodable Readers Australia L4

Features
Read full description

The Decodable Readers Australia books support a systematic approach of learning to read. This approach ensures kids are given the “right-fit” book. Decodable, or phonic readers, only contain words made up of the sounds a child has learnt. Within each level in the Decodable Readers Australia Series, a new group of sounds is introduced. As children move through each level the sounds progress from simple to complex. The Decodable Readers Australia – Level 4 books introduce the sounds sh, ch, th (them) th (thin), qu, ng, wh, g (gent) and c (circle). All the words in each of the 20 books in Level 4 are made up of these sounds and those introduced in Level 1, 2 and 3 along with minimal sight words. After having mastered the Level 1, 2 and 3 sounds and the reading skills of blending and tracking, children should have gained the confidence to read Australian stories with new words and more text on each page. Each story in Level 4 can be enjoyed by listening to the professional audio or read aloud with the support of tapping and hearing the word if required. The audio function can be controlled independently within each page. Both parents and teachers can continue to support children with vocab and comprehension development through using the post-reading activities provided within each story. An addition to the Level 4 readers are the wide range of pre-reading activities that can be used to help set the purpose for reading. Key Features: • listen to each story being read to them using the audio function • use each book to practice reading independently • tap each word to hear the sounds and the word if support is needed • tap to turn each page for individual reading pace • all Australian themes and characters beautifully illustrated with detail for engagement and enjoyment

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
Read full description

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

Screenshots

Decodable Readers Australia L41 screens
Grass Fire4 screens

Verdict

The call

The clearest difference is price: Grass Fire at Free against Decodable Readers Australia L4'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.

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; Decodable Readers Australia L4 costs $15.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Decodable Readers Australia L4 ships an update every 16 months, Grass Fire every 15 months. The most recent releases landed on November 7, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 7 level
Decodable Readers Australia L4 versus Grass Fire: the parameters behind the verdict, then further details
ParameterDecodable Readers Australia L4Grass Fire
Price$15.99Free — better
Rating—1.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyEvery 16 monthsEvery 15 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.112.0 — better
Further details — not scored
Size782 MB66 MB
Age rating4+4+
DeveloperDecodable Readers Australiaarludo Pty Ltd

In-app purchases

None

Decodable Readers Australia L4

No in-app purchases

None

Grass Fire

No in-app purchases

Questions

Is Decodable Readers Australia L4 free?
Decodable Readers Australia L4 costs $15.99, with no in-app purchases.
Is Grass Fire free?
Grass Fire is free to download, with no in-app purchases.
Do Decodable Readers Australia L4 or Grass Fire have ads?
Neither Decodable Readers Australia L4 nor Grass Fire shows ads.
Which is updated more often, Decodable Readers Australia L4 or Grass Fire?
Decodable Readers Australia L4 ships an update every 16 months, and Grass Fire every 15 months. Most recently, Decodable Readers Australia L4 was updated on November 7, 2026 and Grass Fire on November 2, 2026.

Other comparisons