Comparison

Know Abacus 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

Know Abacus

This app teaches children how to use an abacus for various math operations. It covers counting, addition, subtraction, multiplication, and division, helping to develop their mathematical abilities and brain potential. It offers multiple learning modes and customization options.

Highlights
  • Abacus counting
  • Addition and subtraction (1 & 2 digits)
  • Multiplication and division (1-2 digits)
  • Mental math practice
  • Review and random lessons
  • Customizable abacus (color, touch)
  • Multiple languages
Read full description

Abacus is a wonderful mathematical instrument used for calculation. This app will help your children learn about Abacus, Numbers, Counting, Addition, and Subtraction. This is the first step to tap the unexploited potential in their brain and unleash their mathematical capability. Suitable for children age 5 and up, who know about numbers and some basic addition and subtraction. For smaller children, recommend KnowNumber app. * Counting with Abacus * Addition/Subtraction 1 digit * Addition/Subtraction 2 digits * Multiplication 1-2 digits * Division 1-2 digits * Mental math * Review lessons * Unlimited random lessons * Black/white or colorful abacus * Learning modes * Two-touch or multi-touch abacus * Left-handed mode Localized Languages: * English, French, Spanish, Thai, Turkey, Arabic, Portuguese, and Russian

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

Know Abacus4 screens
Matsy Abacus4 screens

Verdict

The call

The clearest difference is ads: Matsy Abacus at none against Know Abacus's shown. Matsy Abacus also leads on update cadence (monthly vs every 2 months). Know Abacus's advantage is iOS requirement (11.0 vs 13.4). On price, rating, review sentiment and ratings volume 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. Know Abacus sells 1 one-off in-app purchase 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

On the App Store both sit at effectively the same score — 4.8 for Know Abacus against 4.9 for Matsy Abacus. Both are backed by a comparable volume of ratings — 78 and 30 respectively. Written reviews are what separate them: 96% of Know Abacus's written reviews are positive against 100% of Matsy Abacus's.

UpkeepUpdate frequency

Know Abacus ships an update every 2 months, Matsy Abacus monthly. Both last shipped on November 6, 2026.

Scorecard3 real differences · 7 level
Know Abacus versus Matsy Abacus: the parameters behind the verdict, then further details
ParameterKnow AbacusMatsy Abacus
PriceFreeFree
Rating4.8 (78 ratings)4.9 (30 ratings) — better
Positive reviews96.4% of reviews100.0% of reviews — better
Number of ratings78 — better30
Update frequencyEvery 2 monthsMonthly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.4
Further details — not scored
Size28 MB66 MB
Age rating4+4+
DeveloperKittipong MungnirunIGOR ILIN

Customer experience

Know Abacus

All ratings67 ratings
Positive94.0%
Neutral1.5%
Negative4.5%
Written reviews28 reviews
Positive96.4%
Neutral3.6%
Negative0.0%

Matsy Abacus

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

In-app purchases

1 purchases

Know Abacus

One-time1
  • Remove Ads$2.99
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 Know Abacus free?
Know Abacus 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, Know Abacus or Matsy Abacus?
Matsy Abacus is rated higher. Know Abacus averages 4.8 out of 5 from 78 ratings, while Matsy Abacus averages 4.9 from 30 ratings.
Do Know Abacus or Matsy Abacus have ads?
Know Abacus shows ads; Matsy Abacus does not.
Which is updated more often, Know Abacus or Matsy Abacus?
Know Abacus ships an update every 2 months, and Matsy Abacus monthly. Most recently, Know Abacus was updated on November 6, 2026 and Matsy Abacus on November 6, 2026.

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