Know Abacus vs SB exam
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
SB exam
Create and manage K-12 tests and assessments with a variety of question types. Features automatic grading, detailed student results, and question-level statistics to adapt course material.
- Multiple question types (text, image, free text, fill-in-the-blank, video, audio, matching)
- Automatic grading with pass/fail levels
- Individual student results tracking
- Question-level statistics for course analysis
- Data export to Excel
- Real-time test creation and management
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"SB exam" is a real-time application to create and manage tests, assessments, exams for K-12. We offer a lot of question types and a wide range of settings to accommodate every use case. -Multiple choice text questions -Multiple choice image questions -Free text questions -Fill in the blank questions -Video questions -Audio questions -Matching questions Automatic grading Let our system do the heavy lifting and take advantage of the automatic grading. Set the pass/fail level of you exam and let your students know if they passed your test. All completely automated. Results & Stats See the results of your students on an individual level. Download the details to excel for further analysis. Or dive in to the stats on question level to learn which part of the exam was easy for your students and which was difficult. And adapt your course material. For more information please visit at www.schoolbright.co
Screenshots
Verdict
The clearest difference is rating: Know Abacus at 4.7 against SB exam's 3.0. Know Abacus also leads on ratings volume (67 vs 1). SB exam's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, update cadence, device support and iOS requirement 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. SB exam asks for nothing beyond the download.
Know Abacus holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Know Abacus has 67 ratings behind it against 1, so its average is the more settled of the two.
Know Abacus ships an update every 2 months, SB exam every 5 weeks. The most recent releases landed on July 6, 2026 and June 10, 2026 respectively.
| Parameter | Know Abacus | SB exam |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (67 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 96.4% of reviews | — |
| Number of ratings | 67 — better | 1 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 28 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Kittipong Mungnirun | JABJAI CORPORATION COMPANY LIMITED |
Customer experience
Know Abacus
SB exam
In-app purchases
Know Abacus
- Remove Ads$2.99
SB exam
No in-app purchases
