Know Abacus vs Mental Arithmetic Math
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
Mental Arithmetic Math
Engage in fun arithmetic challenges suitable for all ages. Improve your math skills and concentration with adjustable difficulty levels. Play solo or with friends, even offline, for a quick and enjoyable brain workout.
- Arithmetic challenges
- Adjustable difficulty
- Suitable for all ages
- Play with friends
- Offline play
- Improves concentration
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■ Application Features Have a great time playing with family and friends. Become skilled at arithmetic, useful for your mathematical studies. Play with a difficulty that matches your level. Enjoyable for all ages. Even playing for a short amount of time can be a lot of fun! You can also play offline. Increase your ability to concentrate through brain activation.
Screenshots
Verdict
The clearest difference is in-app purchases: Mental Arithmetic Math at none against Know Abacus's 1. Know Abacus's advantage is rating (4.7 vs 4.4) and iOS requirement (11.0 vs 15.0). On price, review sentiment, ratings volume and update cadence 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. Know Abacus sells 1 one-off in-app purchase. Mental Arithmetic Math asks for nothing beyond the download.
Know Abacus holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 67 and 90 respectively. Written reviews point the same way: 96% of Know Abacus's written reviews are positive against 90% of Mental Arithmetic Math's.
Both ship on a similar rhythm, roughly every 2 months. Both last shipped on October 15, 2026.
| Parameter | Know Abacus | Mental Arithmetic Math |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (67 ratings) — better | 4.4 (90 ratings) |
| Positive reviews | 96.4% of reviews — better | 90.0% of reviews |
| Number of ratings | 67 | 90 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 28 MB | 105 MB |
| Age rating | 4+ | 4+ |
| Developer | Kittipong Mungnirun | Satoshi Konno |
Customer experience
Know Abacus
Mental Arithmetic Math
In-app purchases
Know Abacus
- Remove Ads$2.99
Mental Arithmetic Math
No in-app purchases
Questions
Is Know Abacus free?
Is Mental Arithmetic Math free?
Which has better reviews, Know Abacus or Mental Arithmetic Math?
Do Know Abacus or Mental Arithmetic Math have ads?
Which is updated more often, Know Abacus or Mental Arithmetic Math?
Other comparisons
