Comparison

KIDS SUM vs Matsy Abacus

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

Head to head
About

KIDS SUM

This app offers a playful way for children aged 3 and up to learn numbers and counting skills using an interactive abacus. It includes tasks with rewards and is developed with input from parents and children.

Highlights
  • Interactive abacus for learning numbers
  • Counting from 1 to 100
  • Task-based learning with animation rewards
  • Developed with parent and child input
  • Suitable for ages 3-99
Features
Read full description

► Kids Games 3+ | Learn counting 100 Recommended age: 3 and 99 years A playful way for your child to learn numbers and counting skills. This abacus – which works like a real one – helps children learn numbers quickly. From 1 to 15, from 1 to 50, and from 1 to 100. Special feature: Not only you, but also the app can have your child carry out counting tasks. The "Task" button also presents problems to solve, and the right answer is rewarded with a short animation! An app for children of all ages! Try it out now... Our Happy Touch promise: Each app is developed in cooperation with young parents and children. The parents' suggestions are directly incorporated in our development process. This lets us bring you the best apps for children! *Happy Touch on FACEBOOK: www.facebook.com/HappyTouchApps * *Reviews, tips, new apps, contests & more * Free Trial & Subscriptions (optional): • Subscriptions provide features for a price as offered in the app • Payment will be charged to the iTunes Account • You will be able to access the content for the duration of the subscription • The subscription automatically renews for the same price and duration period as the original package unless auto-renew is turned off at least 24-hours before the end of the current period • The account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen package • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase • No cancellation of the current subscription is allowed during active subscription period • You may cancel a subscription during its free trial period via the subscription setting through your iTunes account • This must be done 24 hours before the end of the subscription period to avoid being charged. Please visit http://support.apple.com/kb/ht4098 for more information. • Any unused portion of a free-trial period, will be forfeited when the user purchases a HappyTouch subscription Privacy Policy: https://happy-touch-apps.com/english/privacy-policy Terms of use : https://happy-touch-apps.com/english/terms-and-conditions More information: www.happy-touch-apps.com www.facebook.com/happytouchapps

About

Matsy Abacus

This educational app helps children master mental arithmetic through engaging games and adaptive trainers. It utilizes abacus techniques, flash cards, and proven methods to boost calculation speed, focus, and memory. Suitable for students, parents, and teachers seeking effective mental math tools.

Highlights
  • Abacus flash cards
  • Multiplication and division trainers
  • Mental math exercises
  • Brother/Friend techniques
  • 5050 mode
  • Speed & accuracy games
  • Adaptive difficulty
Features
Read full description

Matsy Abacus – Mental Math Trainers for
Boost mental calculation, focus, and memory through play! Matsy Abacus is an educational app that helps children master mental arithmetic with engaging exercises and adaptive trainers. Mental math, abacus techniques, flash cards, and proven methods like “Brother” and “Friend” — all in one app. Inside the app: * Flash cards for learning the abacus * Trainers for multiplication and division — including times tables * Mental math exercises: addition and subtraction with multiple levels * “Brother”, “Friend”, and “Brother + Friend” techniques — simple explanations and practice * 5050 mode — count from 1 to 100 and back * Speed & accuracy games — improve results daily * Flexible difficulty settings — adapts to your level What is mental arithmetic? Mental arithmetic is a method of mental calculation based on abacus practice. It develops: * Fast mental math * Concentration and attention * Logical and visual thinking * Memory and observation skills Who is it for? * Students in mental arithmetic schools * Math competition participants * Elementary school students (Grades 1–4) * Parents and teachers looking for effective mental math tools Why choose Matsy Abacus? * Simple and clear abacus learning * Fun mini-games and trainers * Suitable for both beginners and advanced users * Train anytime — even short sessions bring results Help your child grow mathematically —
Download Matsy Abacus and start exploring the world of mental math today! Terms of Use: https://mental-workout.github.io/terms_of_use.html Privacy Policy: https://mental-workout.github.io/privacy_policy.html

Screenshots

KIDS SUM4 screens
Matsy Abacus4 screens

Verdict

The call

The clearest difference is review sentiment: Matsy Abacus at 100% against KIDS SUM's 31%. Matsy Abacus also leads on rating (4.9 vs 3.8). On price, ratings volume, 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

Both are free to download. KIDS SUM sells 3 in-app purchases, starting at $9.99 per month and Matsy Abacus sells 5 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Matsy Abacus holds the better App Store score, 4.9 against 3.8. Both are backed by a comparable volume of ratings — 83 and 30 respectively. Written reviews point the same way: 31% of KIDS SUM's written reviews are positive against 100% of Matsy Abacus's.

UpkeepUpdate frequency

KIDS SUM ships an update every 2 months, Matsy Abacus monthly. The most recent releases landed on September 27, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 8 level
KIDS SUM versus Matsy Abacus: the parameters behind the verdict, then further details
ParameterKIDS SUMMatsy Abacus
PriceFreeFree
Rating3.8 (83 ratings)4.9 (30 ratings) — better
Positive reviews31.3% of reviews100.0% of reviews — better
Number of ratings83 — better30
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.4
Further details — not scored
Size331 MB66 MB
Age rating4+4+
DeveloperHappy Touch Kids Learning Games for Toddlers GmbHIGOR ILIN

Customer experience

KIDS SUM

All ratings83 ratings
Positive67.5%
Neutral12.0%
Negative20.5%
Written reviews16 reviews
Positive31.3%
Neutral12.5%
Negative56.3%

Matsy Abacus

All ratings30 ratings
Positive96.7%
Neutral3.3%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

KIDS SUM

Subscriptions2
  • Count and Add1 Month trial$9.991 Month
  • Count and Add$29.991 Year
One-time1
  • FULL VERSION$29.99
5 purchases

Matsy Abacus

Subscriptions4
  • Mental Workout Premium Month7 Days trial$2.991 Month
  • Premium (6 months)7 Days trial$8.996 Months
  • Matsy Premium Year$9.991 Year
Show 1 more
  • Mental Workout Premium Year7 Days trial$14.991 Year
One-time1
  • Mental Workout Premium$7.99

Questions

Is KIDS SUM free?
KIDS SUM is free to download, with in-app purchases available.
Is Matsy Abacus free?
Matsy Abacus is free to download, with in-app purchases available.
Which has better reviews, KIDS SUM or Matsy Abacus?
Matsy Abacus is rated higher. KIDS SUM averages 3.8 out of 5 from 83 ratings, while Matsy Abacus averages 4.9 from 30 ratings.
Do KIDS SUM or Matsy Abacus have ads?
Neither KIDS SUM nor Matsy Abacus shows ads.
Which is updated more often, KIDS SUM or Matsy Abacus?
KIDS SUM ships an update every 2 months, and Matsy Abacus monthly. Most recently, KIDS SUM was updated on September 27, 2026 and Matsy Abacus on September 22, 2026.

Other comparisons