Comparison

Oz Phonics 4 vs Comprehension Builder.

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

Head to head
About

Oz Phonics 4

Features
Read full description

Oz Phonics 4 has 5 lesson groups that build on the content of the Oz Phonics Intro, 1, 2 and 3 apps. Lesson group 1 introduces some new sound/letter relationships. The ‘c’ making the /s/ sound, as in ‘city’. The ‘g’ making the /j/ sound, as as in ‘gentle’. The /ng/ sound at the end of the word ‘ring’ is also introduced, with the letter ‘n’ by itself, also making this sound, as in the word ‘bank’. Lesson groups 2, 3, and 4 introduce the long vowel sounds(letter name sounds) and some of their spellings. These 3 lesson groups also follow the same format as lesson group 1, demonstration, missing letter exercise, word finder, reading practice. More long vowel spellings will be covered in the Oz Phonics 5 app. Lesson group 2 covers ‘letters by themselves” in a word (/long a/ sound in the word baby, /long e/ in the word ‘be', etc.). Lesson 3 covers “letters with an ‘e’ separated by a consonant” (tape, note, cube, etc.). Note that the ‘u-e’ combination produces two different sounds, /oo/ in ‘nude’ and /yoo/ on ‘cube’. Lesson group 4 covers “letters next to an ‘e’” (pie, bee, toe, blue). Also included is the ‘ye’ making the long ‘I’ sound as in the word ‘bye’. Lesson group 5 introduces r-Controlled Vowels. ‘er’, ‘ir’, ‘ur’ all making the same sound, and the sounds ‘ar’ and ‘or’. Visit ozphonics.com for details of other apps in our step-by-step series.

About

Comprehension Builder.

This app helps users improve reading comprehension, working memory, and the ability to answer questions about text. It features incremental learning with texts that increase in length and difficulty as skills develop, along with a reward system for motivation. Designed for learners of all ages, including those with special needs or learning English.

Highlights
  • Passage comprehension practice
  • Working memory development
  • Answering multiple-choice questions
  • Incremental learning levels
  • Reward Center for motivation
  • 200+ fiction and non-fiction texts
  • Content designed by teachers
Features
Read full description

** Happy Frog Apps is a Mom’s Choice Award Winner! Also featured on FunEducationalApps.com, TeachersWithApps.com, and more! ** The “Comprehension Builder” app builds skills in passage comprehension, working memory and answering multiple choice questions about a text. What parents say about our awesome apps: *** 5 stars! Brilliant! An app that understands how kids actually learn. Thank you. *** 5 stars! Every one of your apps that I’ve tried is great! When using “Comprehension Builder”, your learner will first read a passage. The learner must then hold the information in memory in order to answer a multiple choice question. To build sustained attention and working memory, early levels contain 2-sentence texts with limited word count. As comprehension is demonstrated and memory increases, the texts increase in length and difficulty. “Comprehension Builder” contains 200+ fiction and non-fiction texts on a variety of topics. This app is perfect for learners who: - when reading or listening, information seems to ‘go in one ear and out the other.’ - have trouble responding to questions about a text unless they can refer back to the text. - can understand each sentence, but don’t seem to put them together to make meaning from the text as a whole. Additional Features: - Incremental learning. New levels are unlocked only when your child demonstrates mastery. - Fun and engaging Reward Center to increase motivation. - Contains over 600 questions, with content designed by professional teachers and researchers. Our apps are designed for and tested by typical and special needs children. Testers include children with Autism and other special needs. Our apps work for them! Our apps are also suitable for adults dealing with aphasia or learning English as a Second Language. To evaluate the app, download the free version, which has 2 free levels. The remaining levels accessed with an in-app purchase. If you prefer no in-app purchases, download the School Edition (SE) version of this app, which includes all levels and up to 10 users. We take customer service very seriously! If you ever have a problem or find that we've missed something, contact us at our website and we will do our best to fix the problem.  www.HappyFrogApps.com Our apps are safe for kids. We collect NO private information in our app. None! Our apps do not allow unrestricted web or social media access. We conform to the Children's Online Privacy Protection Act.

Screenshots

Comprehension Builder.4 screens

Verdict

The call

The clearest difference is price: Comprehension Builder. at Free against Oz Phonics 4's $2.99. Comprehension Builder. also leads on device support (3 vs 1) and iOS requirement (12.2 vs 16.0). Oz Phonics 4's advantage is in-app purchases (none vs 3). On update cadence and ads 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

Comprehension Builder. is free to download; Oz Phonics 4 costs $2.99 up front. Comprehension Builder. sells 3 one-off in-app purchases. Oz Phonics 4 asks for nothing beyond the download.

UpkeepUpdate frequency

Oz Phonics 4 ships an update every 27 months, Comprehension Builder. every 47 months. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Oz Phonics 4 versus Comprehension Builder.: the parameters behind the verdict, then further details
ParameterOz Phonics 4Comprehension Builder.
Price$2.99Free — better
Rating—2.0 (2 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 27 months — betterEvery 47 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPadiPhone, iPad, iPod — better
Requires iOS16.012.2 — better
Further details — not scored
Size47 MB50 MB
Age rating4+4+
DeveloperDSP Learning Pty LtdJanine Toole

In-app purchases

None

Oz Phonics 4

No in-app purchases

3 purchases

Comprehension Builder.

One-time3
  • Two Users$1.99
  • All Levels$3.99
  • 10 Users$3.99

Questions

Is Oz Phonics 4 free?
Oz Phonics 4 costs $2.99, with no in-app purchases.
Is Comprehension Builder. free?
Comprehension Builder. is free to download, with in-app purchases available.
Do Oz Phonics 4 or Comprehension Builder. have ads?
Neither Oz Phonics 4 nor Comprehension Builder. shows ads.
Which is updated more often, Oz Phonics 4 or Comprehension Builder.?
Oz Phonics 4 ships an update every 27 months, and Comprehension Builder. every 47 months. Most recently, Oz Phonics 4 was updated on October 9, 2026 and Comprehension Builder. on October 14, 2026.

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