Comparison

Comprehension Builder. vs BlueFox Edu

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

Head to head
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.

About

BlueFox Edu

Features
Read full description

The BlueFox robot and APP are the second generation of SES's company robotics solutions. The BlueFox builds innovation, creativity and coding skills composed of following units. Each unit has 15 lessons of 2 hours each. Robot coding and basic algorithms principles of robotics, programming, movement algorithms, sensor reading, peripheral operation. See our RobocklySense app for the Sense robot.

Screenshots

Comprehension Builder.4 screens
BlueFox Edu3 screens

Verdict

The call

The clearest difference is in-app purchases: BlueFox Edu at none against Comprehension Builder.'s 3. On price, update cadence, ads 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

Both are free to download. Comprehension Builder. sells 3 one-off in-app purchases. BlueFox Edu asks for nothing beyond the download.

UpkeepUpdate frequency

Comprehension Builder. ships an update every 47 months, BlueFox Edu every 41 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Comprehension Builder. versus BlueFox Edu: the parameters behind the verdict, then further details
ParameterComprehension Builder.BlueFox Edu
PriceFreeFree
Rating2.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 47 monthsEvery 41 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.212.0 — better
Further details — not scored
Size50 MB67 MB
Age rating4+4+
DeveloperJanine TooleS. E. S. - SCIENTIFIC EDUCATIONAL SYSTEMS LTD

In-app purchases

3 purchases

Comprehension Builder.

One-time3
  • Two Users$1.99
  • All Levels$3.99
  • 10 Users$3.99
None

BlueFox Edu

No in-app purchases

Questions

Is Comprehension Builder. free?
Comprehension Builder. is free to download, with in-app purchases available.
Is BlueFox Edu free?
BlueFox Edu is free to download, with no in-app purchases.
Do Comprehension Builder. or BlueFox Edu have ads?
Neither Comprehension Builder. nor BlueFox Edu shows ads.
Which is updated more often, Comprehension Builder. or BlueFox Edu?
Comprehension Builder. ships an update every 47 months, and BlueFox Edu every 41 months. Most recently, Comprehension Builder. was updated on October 14, 2026 and BlueFox Edu on October 15, 2026.

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