KIDS SUM vs Matsy Abacus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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► 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
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.
- Abacus flash cards
- Multiplication and division trainers
- Mental math exercises
- Brother/Friend techniques
- 5050 mode
- Speed & accuracy games
- Adaptive difficulty
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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
Verdict
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
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.
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.
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.
| Parameter | KIDS SUM | Matsy Abacus |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (83 ratings) | 4.9 (30 ratings) — better |
| Positive reviews | 31.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 83 — better | 30 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 331 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | Happy Touch Kids Learning Games for Toddlers GmbH | IGOR ILIN |
Customer experience
KIDS SUM
Matsy Abacus
In-app purchases
KIDS SUM
- Count and Add1 Month trial$9.991 Month
- Count and Add$29.991 Year
- FULL VERSION$29.99
Matsy Abacus
- Mental Workout Premium Month7 Days trial$2.991 Month
- Premium (6 months)7 Days trial$8.996 Months
- Matsy Premium Year$9.991 Year
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- Mental Workout Premium Year7 Days trial$14.991 Year
- Mental Workout Premium$7.99
Questions
Is KIDS SUM free?
Is Matsy Abacus free?
Which has better reviews, KIDS SUM or Matsy Abacus?
Do KIDS SUM or Matsy Abacus have ads?
Which is updated more often, KIDS SUM or Matsy Abacus?
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