Comparison

Understanding Math vs Atchoo!

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

Head to head
About

Understanding Math

This app offers interactive games and exercises to help children understand and practice addition and subtraction up to 100. It features multiple user profiles, progress tracking, and a competitive duel mode for engaging learning.

Highlights
  • Unlimited user profiles
  • Track child's achievements
  • Addition and subtraction up to 100
  • Four different game settings
  • Interactive learning methods
  • Duel mode for competition
Features
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ChildrenΒ΄s Technology Review - EDITORS CHOICE FOR EXCELLENCE IN DESIGN: "Teachers take note of this excellent set of classroom friendly math exercises that is coming April 2. Features include unlimited user profiles (children must enter their name) and the ability to track each child's achievements by both quality (accuracy) and quantity, and the ability to see how to add and subtract quantities of up to 100 in 4 different setting." "Innovative, engaging, and fun; finally an app that teaches kids HOW to do math." TeachersWithApps.com "This is another excellent math app by appp media. At Fun Educational Apps, we review many apps devoted to teaching math; Understanding Math- Addition and Subtraction ranks as one of the best of the best. That's why it has earned our latest TOP PICK." FunEducationalApps.com OnSarahsiPad.com: "Understanding Maths - Addition and Subtraction is an ideal app for both home and school. It will be particularly valuable in the lower grades of school and for those children who are moving from concrete to symbolic representations of addition and subtraction. Older children struggling with these concepts will also enjoy using this app as it has an age-appropriate interface" Understanding Math - Addition and Subtraction is the second app in a series of educational apps based on J. Bruner's Learning Theory β€œThree Modes of Representation”. Understand and practise addition and subtraction in 4 games and show your skills in the Duel! Compete against your peers or even parents by setting different levels of difficulty. Addition - Tap with your fingers Solve the problem by touching the display. Example: 3 + 5 Tap with 3 fingers, then with 5. After solving the problem, you can pop the objects by touching them. Please turn the "Multitasking Gestures" on your iPad to OFF in "General Settings", as these will close the app! Common Core Standards: Understand addition Addition Drag down the correct amount of tens and ones. Example 37+8= Drag down 3 tens and 7 ones of one colour and 8 ones of the other colour. See and understand place value: ten "ones" make one "ten". Common Core Standards: Understand place value Understand addition Subtraction Drag down the correct amount of tens and ones. See and understand that ten is a bundle of ten ones See and understand the place value when taking one away from 10 Common Core Standards: Understand place value Understand subtraction Training Solve the problem by writing the solution onto the screen. Help is provided by the iconic representation of the numbers. Common Core Standards: Fluently add and subtract within 20 or 100 using mental strategies Duel Two players compete against each other. Each player can choose his level of difficulty. Tap the sun to start. The first to enter the correct solution will earn a star. Earning 5 stars wins the game. Level 1: ->20, + Level 2: ->20, +, - Level 3: ->100, + Level 4: ->100, +, - Common Core Standards: Fluently add and subtract within 20 or 100 using mental strategies Toolbox Enter your own addition or subtraction equation. Explore the place value. Privacy Policy You don’t have to worry about your child playing independently with appp media apps because we take your child’s privacy and online safety very seriously. Our apps include: β€’ no links to websites outside the app without a gate β€’ no ads β€’ no data collection or tracking β€’ no social media sharing β€’ no in-app purchases For detailed information on our privacy policy, visit www.apppmedia.com ––––––––––––––––––––––––––––––––––––––––––––––––––––– KNOW WHAT'S INSIDE As a MOMs with Apps member, we follow the "Know what's inside" best practices for kids’ apps ––––––––––––––––––––––––––––––––––––––––––––––––––––– At appp media we value your feedback so please email your comments or questions to support@apppmedia.com

About

Atchoo!

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β€œTeach Me to Read” is a tool created for progressive reading practice by kids ages 5 to 7. β€’ 3 difficulty levels and reading comprehension activities tailored to each level. β€’ 3 font types: Stick, School and Printing Press. β€’ 7 languages: Catalan, English (U.S. and United Kingdom), Spanish (Spain and Latin America), Italian, French, German and Portuguese (Brazil). β€’ Confidence and autonomy: readers can explore the different levels, advancing and mastering them at their own pace. β€’ Designed in cooperation with teachers. Tested by kids, parents and teachers. β€’ Pedagogical design based on the Constructivist Approach and the Montessori Method. β€’ No in-app purchases or advertising to disrupt you and your child. 100% safe for children: no access to social networks or the Internet. What will I find? ============== β€’ Three ways of enjoying the same story: 1 For the child who still does not know how to read and needs to discover the world through simple words. 2 For the child who can read with more precision and wishes to explore more details of the story. 3 For the child who already knows how to read and is capable of fully undertaking the adventure of discovering the pleasure of reading. β€’ Seven languages so you can switch between languages, familiarize yourself with a new one, or simply practice two mother tongues. β€’ Reading comprehension activities tailored to each level. Learning to read is about more than pronouncing the phonemes in the alphabet and spelling words. β€’ β€œAchoo!” What could happen to a ladybug when she is allergic to the plants of the forest where she lives? An original story that instills values. Much more than a book! This story is available in other languages on other apps from AucaDigital. Other benefits for the child ======================= β€’ Thanks to the reading comprehension activities children not only know that they have understood the story, but are also able to improve their sensory-perceptual development by exercising their memory, attention, concentration and capacity for observation. β€’ Helps children to acquire values and personal and social skills. Features ======= β€’ Interactive illustrations that you won't be able to resist touching again and again. β€’ An original soundtrack and audio effects during reading. β€’ A setup menu that is easy for kids to use, available on each screen: change of font, music on/off, access to scenes, and language change. β€’ β€œTeach Me to Read” is an educational app for use at home and in school. β€’ Recommended for the reading and writing skills teaching/learning process for preschool and first grade primary school students. Privacy Policy ============ We take your privacy and that of your family seriously. We do not collect or share information about you or your children, or include third-party advertising. If you need assistance, email us at soporte@aucadigital.com Do not hesitate to comment and vote on our app once downloaded. OPINIONS OF USERS Nicely done...recommended! I really liked how you could grade content to this book, depending on the level of a child's competency. There are no IAPs or ads, and I would definitely recommend this to families and teachers. K-5 EstΓ‘ muy bien! Parece un cuento, pero es mucho mΓ‘s. Mi hija ha de cinco aΓ±os mejorado la lectura y disfruta haciendo las actividades. Es genial para despuΓ©s que han aprendido el abc. OPINIONS ON AUCADIGITAL APPS β€œ(…) At the beginning of the stories, there are settings that can be modified to suit the needs of a particular child. It is possible to choose from three different levels of difficulty in the text. The text can be displayed in block letters, in cursive, or in all capital letters, depending on your preference.” (http://www.funeducationalapps.com/) β€œ(…) una de las mejores aplicaciones para niΓ±os de iPhone y iPad que hemos encontrado ya que aprovecha al mΓ‘ximo el uso y la posibilidad de los cuentos.” (http://appleweblog.com)

Screenshots

Understanding Math4 screens

Verdict

The call

The clearest difference is update cadence: Understanding Math at every 11 months against Atchoo!'s every 38 months. Understanding Math also leads on device support (3 vs 1) and iOS requirement (8.0 vs 12.0). Atchoo!'s advantage is price ($2.99 vs $3.99). On ads and in-app purchases there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Understanding Math costs $3.99 and Atchoo! $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Understanding Math ships an update every 11 months, Atchoo! every 38 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

Scorecard4 real differences Β· 4 level
Understanding Math versus Atchoo!: the parameters behind the verdict, then further details
ParameterUnderstanding MathAtchoo!
Price$3.99$2.99 β€” better
Positive reviews78.6% of reviewsβ€”
Update frequencyEvery 11 months β€” betterEvery 38 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidβ€”
DevicesiPhone, iPad, iPod β€” betteriPad
Requires iOS8.0 β€” better12.0
Further details β€” not scored
Size37 MB91 MB
Age rating4+4+
Developerappp media UGAsuncion Munoz

In-app purchases

None

Understanding Math

No in-app purchases

None

Atchoo!

No in-app purchases

Questions

Is Understanding Math free?
Understanding Math costs $3.99, with no in-app purchases.
Is Atchoo! free?
Atchoo! costs $2.99, with no in-app purchases.
Do Understanding Math or Atchoo! have ads?
Neither Understanding Math nor Atchoo! shows ads.
Which is updated more often, Understanding Math or Atchoo!?
Understanding Math ships an update every 11 months, and Atchoo! every 38 months. Most recently, Understanding Math was updated on October 10, 2026 and Atchoo! on October 2, 2026.

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