Know Abacus vs Abacus Exercise
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
Abacus Exercise
Practice abacus calculations with a customizable digital tool. Adjust bead colors, sounds, and layout for a personalized learning experience. Challenge yourself with addition, subtraction, multiplication, and division exercises.
- Customizable abacus layout
- Adjustable bead size and position
- Up to 15-digit support
- Customizable bead colors and sounds
- Addition, subtraction, multiplication, division practice
- Level-based challenges
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This app focuses on the ease of use of the abacus on the app, and aims to realize smooth and comfortable operability. In addition to being able to use the abacus widely on the horizontal screen, the size and position can be freely customized according to the device. The number of digits can be used up to 15 digits, and the color and sound of the beads can also be set. You can challenge the addition and subtraction, multiplication, division questions according to your level.
Screenshots
Verdict
The clearest difference is review sentiment: Know Abacus at 96% against Abacus Exercise's 46%. Know Abacus also leads on rating (4.7 vs 4.5). Abacus Exercise's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). On price, ratings volume, ads and device support 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. Abacus Exercise asks for nothing beyond the download.
Know Abacus holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 67 and 60 respectively. Written reviews point the same way: 96% of Know Abacus's written reviews are positive against 46% of Abacus Exercise's.
Know Abacus ships an update every 2 months, Abacus Exercise every 3 weeks. The most recent releases landed on July 6, 2026 and September 21, 2026 respectively.
| Parameter | Know Abacus | Abacus Exercise |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (67 ratings) — better | 4.5 (60 ratings) |
| Positive reviews | 96.4% of reviews — better | 46.2% of reviews |
| Number of ratings | 67 — better | 60 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| 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 | 11.0 |
| Further details — not scored | ||
| Size | 28 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Kittipong Mungnirun | Hirokazu Komatsu |
Customer experience
Know Abacus
Abacus Exercise
In-app purchases
Know Abacus
- Remove Ads$2.99
Abacus Exercise
No in-app purchases
Questions
Is Know Abacus free?
Is Abacus Exercise free?
Which has better reviews, Know Abacus or Abacus Exercise?
Do Know Abacus or Abacus Exercise have ads?
Which is updated more often, Know Abacus or Abacus Exercise?
Other comparisons
