Mental Abacus Book 3 vs Mathmaji
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mental Abacus Book 3
Read full descriptionHide full description
Mental Abacus Book 3 is a bible on rapid calculations. It covers all kinds of vedic mathematics tricks for fast calculations. Book 1 introduces rapid calculations on addition and subtraction, while Book 3 mainly focuses on magic ways in solving multiplications. Abacus serves as an incredible tool in making everything easy and fast. Most important of all, all these methods help to activate and keep our brains shape. Further to Book 2, specific abacus pitfalls are included at the same time. As in the abacus series, Mental Abacus Book 3 is divided into two sections, namely Tutorial and Abaculator. ABACUS TUTORIAL Interfaces are organized in a simple and easy way as in the previous books. Rapid calculation techniques are explained not only in words, but also with sample questions. Numerous examples with demonstration will definitely further strengthen the study effectiveness. For Chapter 7 onwards, prerequisite knowledge of Book 2 is required. ABACULATOR A great tool that demonstrates the steps for BOTH hands abacus mental arithmetic. Just enter any multiplication equation, Abaculator will determine which rapid calculation method should be used, and show you every step with detailed description and explanation. You can pause and continue whenever you need, or even switch to show set of steps for other number or equation in the middle of the demonstration. And More...VIRTUAL ABACUS Built-in virtual abacus enables you to follow the lessons and practice the Two Hands Fingering Method on the abacus at the same time. You can try to solve the examples on the virtual abacus by yourself and check with the demonstration steps provided on the page as well. FEATURES SUMMARY: - All kinds of Rapid Calculations on Multiplication - Multiplicative Pithy Formula Tricks - Abacus Decimal Division - Rounding to the nearest hundredth Pitfall - Dealing with Negative Numbers on Abacus - Abaculator auto-determines the best rapid calculation method - Two hands fingering method fosters right brain functions - Virtual Abacus allows you to practise along everywhere - Assists in achieving the ultimate aim of abacus training, transforming visualized beads move on imaginary abacus and getting rid of the substantial abacus
Mathmaji
This app offers a K-5 math curriculum using the Japanese method of structured problem-solving. It features over 500 exercises designed to build confidence, comprehension, and mental calculation skills. Track progress with a comprehensive learning management system.
- K-5 numerical math curriculum
- 500+ engaging exercises
- Japanese instruction techniques
- Tailored lessons and games
- Comprehensive Learning Management System
- Boosts confidence and comprehension
Read full descriptionHide full description
Mathmaji is an award-winning educational experience that puts the proven Japanese method of structured problem solving at your child's fingertips. Mathmaji is the only math app with a complete K-5 numerical math curriculum to teach new concepts, and our 500+ engaging exercises are specially designed to hone problem-solving skills. Mathmaji’s innovative combination Japanese instruction techniques and tailored lessons, games, and practice exercises earned it the Asian EdTech Summit Global Award Gold Prize and the Global EdTech Startup Award. · Build a strong foundation in essential math skills, boosting confidence and comprehension. · Master new concepts and apply them to real-world problems, develop a strong number sense, and learn methods for quick mental calculation. · Find out how the Japanese approach to math ed takes the mystery out of multiplication, division, and other concepts that may have your student stumped. · Track your student’s progress with Mathmaji’s comprehensive Learning Management System. Get two weeks full access for FREE. Say goodbye to math anxiety! With Mathmaji, a few minutes a day is all it takes to make math your child’s favorite subject!
Screenshots
Verdict
The clearest difference is price: Mathmaji at Free against Mental Abacus Book 3's $8.99. Mathmaji also leads on update cadence (weekly vs every 20 months). Mental Abacus Book 3's advantage is in-app purchases (none vs 2) and iOS requirement (8.0 vs 14.0). On 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
Mathmaji is free to download; Mental Abacus Book 3 costs $8.99 up front. Mathmaji sells 2 in-app purchases, starting at $15.00 per month. Mental Abacus Book 3 asks for nothing beyond the download.
Mental Abacus Book 3 ships an update every 20 months, Mathmaji weekly. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.
| Parameter | Mental Abacus Book 3 | Mathmaji |
|---|---|---|
| Price | $8.99 | Free — better |
| Rating | — | 4.1 (9 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Every 20 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 13 MB | 82 MB |
| Age rating | 4+ | 4+ |
| Developer | Hamster Force Multimedia Ltd. | Mathmaji Co., Ltd. |
In-app purchases
Mental Abacus Book 3
No in-app purchases
Mathmaji
- Plus Monthly(1 Month)14 Days trial$15.001 Month
- Plus Annual (1 Year)14 Days trial$124.991 Year
Questions
Is Mental Abacus Book 3 free?
Is Mathmaji free?
Do Mental Abacus Book 3 or Mathmaji have ads?
Which is updated more often, Mental Abacus Book 3 or Mathmaji?
Other comparisons















