Know Abacus vs Mental 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 Math
Enhance your arithmetic abilities with daily math challenges. This app offers over 30 difficulty levels, personalized exercises, and progress tracking to help users of all ages improve their calculation speed and accuracy.
- 30+ difficulty levels
- Personalized exercises
- Progress tracking
- Quick sessions
- User-friendly design
- Engaging and interactive
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Boost Your Mental Math Skills – Anytime, Anywhere! Sharpen your mental math skills or take on exciting number challenges with the ultimate math-practice companion! Challenge Your Brain: Explore 30+ difficulty levels, from basic addition and subtraction to multiplication tables and division. Perfect for kids, students, and math enthusiasts! Tailored Learning: Progress at your own pace with exercises matched to your skill level. Each level has its own icon to help you track achievements and keep improving. Track Your Progress: Review detailed summaries after each session to spot strengths and areas to improve. Restart levels anytime to aim for perfection! Fun for All Ages: Designed to be engaging, interactive, and rewarding for learners of all ages. Why Choose Us? • Clean, user-friendly design. • Quick sessions to fit any schedule. • Perfect for students, educators, and lifelong learners. Download now and start your journey to mental-math mastery! Practice smarter, calculate faster, and enjoy the challenge. Subscription Information: The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage your subscription or turn off auto-renew in your iTunes account settings. Any unused portion of a free trial period will be forfeited when you purchase a subscription. Support & Policies: • support@ulilab.com • https://ulilab.com • Privacy Policy: https://ulilab.com/privacy • Terms of Use: https://ulilab.com/terms
Screenshots
Verdict
The clearest difference is ads: Mental Math at none against Know Abacus's shown. Mental Math also leads on rating (5.0 vs 4.7) and update cadence (every 3 weeks vs every 2 months). Know Abacus's advantage is ratings volume (67 vs 5) and iOS requirement (11.0 vs 17.1). On price, in-app purchases, monetization model 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 and Mental Math sells 10 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Mental Math holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Know Abacus has 67 ratings behind it against 5, so its average is the more settled of the two.
Know Abacus ships an update every 2 months, Mental Math every 3 weeks. The most recent releases landed on July 6, 2026 and September 22, 2026 respectively.
| Parameter | Know Abacus | Mental Math |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (67 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 96.4% of reviews | — |
| Number of ratings | 67 — better | 5 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.1 |
| Further details — not scored | ||
| Size | 28 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Kittipong Mungnirun | Andrey Lebedev |
Customer experience
Know Abacus
Mental Math
In-app purchases
Know Abacus
- Remove Ads$2.99
Mental Math
- Premium Plus$4.997 Days
- Premium Plus3 Days trial$4.997 Days
- Premium Plus$5.991 Month
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- Premium Plus$11.993 Months
- Premium Plus$14.991 Year
- Premium Plus$17.491 Year
- Premium Plus$24.991 Year
- Premium Plus7 Days trial$24.991 Year
- Premium Plus7 Days trial$39.991 Year
- Premium Plus$39.99
Questions
Is Know Abacus free?
Is Mental Math free?
Which has better reviews, Know Abacus or Mental Math?
Do Know Abacus or Mental Math have ads?
Which is updated more often, Know Abacus or Mental Math?
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