Reviews of Know Abacus

By: Kittipong Mungnirun App

List of user reviews and ratings for Know Abacus

Total ratings

4.80 (Rating count: 76)

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Review summary

Users praise Know Abacus for its clear, structured lessons that teach abacus and soroban concepts with gradual progression and real-time practice feedback. The app effectively covers addition, subtraction, multiplication, and division and is beginner-friendly, working well on both iPhone and iPad. The most common requests focus on expanding content for larger numbers and digit options (3– to 5-digit practice and larger operations), along with deeper content on advanced topics. Overall, it’s seen as a strong, value-packed tool for learning abacus basics, though it needs more content for higher-number challenges.

Pros

Structured, sequential lessons that gradually build abacus/soroban skills and integrate older concepts with new ones.
Real-time feedback during practice and clear tutorials make it beginner-friendly.
Covers addition, subtraction, multiplication, and division, providing a solid foundation for mental math.
Easy to use on both iPhone and iPad, suitable for individuals and teaching kids.
Highly regarded by users as an effective learning tool for Soroban.

Cons

Content depth is limited; users want larger-number practice (3–5 digits) and larger operations (two- or three-digit multiplication/division).
Digit settings are restrictive (current single- and double-digit modes) and users want the ability to work with 3–5 digits.

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User Reviews

Recent rating average: 4.80

All time rating average: 4.80

Upgrade to see all 19 reviews

Date	Author	Comment
2026-03-11	Sa*****	I like this app
I like this app
2024-03-04	Sp*****	Maybe more lessons? Ive seen kids do like 10 rows of 2 and 3 digit numbers? just saying.
Maybe more lessons? Ive seen kids do like 10 rows of 2 and 3 digit numbers? just saying.
2020-05-06	Sw*****	Could you please add 3 digit multiplication and division?
Could you please add 3 digit multiplication and division?
2020-04-29	Oo*****	Wow, again! You read my past review and made some improvements. Thank you! Currently, the settings allow single digits and double digits. It would be great to have the option to increase the digits to 3,4,5, and so on. I can’t say enough about how this app has helped me increase my addition and subtraction skills. I really enjoy the mental feature a lot!
Wow, again! You read my past review and made some improvements. Thank you! Currently, the settings allow single digits and double digits. It would be great to have the option to increase the digits to 3,4,5, and so on. I can’t say enough about how this app has helped me increase my addition and subtraction skills. I really enjoy the mental feature a lot!
2019-05-31	Ju*****	This app does a great job teaching the abacus skills sequentially and slowly and then incorporating older skills with new skills into random practice. It teaches multiplication and division as well as addition and subtraction. Suggestions for improvement would be to add practice for larger numbers and teach multiplication with two and three digit numbers. Also, it would be nice if you could turn off the number indicator to give learners more practice reading the numbers. This app is so good, I would pay money for an upgrade. It is the best app for learning the basic concepts of the abacus that I have found.
This app does a great job teaching the abacus skills sequentially and slowly and then incorporating older skills with new skills into random practice. It teaches multiplication and division as well as addition and subtraction. Suggestions for improvement would be to add practice for larger numbers and teach multiplication with two and three digit numbers. Also, it would be nice if you could turn off the number indicator to give learners more practice reading the numbers. This app is so good, I would pay money for an upgrade. It is the best app for learning the basic concepts of the abacus that I have found.
2019-03-03	bb*****	Little clunky but works well and is a good app for learning the abacus. Lots of settings. Goes a bit harder with a setting but wish it had an advanced mode and even get into decimals etc. I also can’t figure out how to get rid of ads.
Little clunky but works well and is a good app for learning the abacus. Lots of settings. Goes a bit harder with a setting but wish it had an advanced mode and even get into decimals etc. I also can’t figure out how to get rid of ads.
2018-08-13	Ma*****	I have been looking for an app to LEARN the abacus/ soroban and THIS is it!
I have been looking for an app to LEARN the abacus/ soroban and THIS is it!
2018-03-23	Su*****	Please please add more content 3,4,5 digits! I would live to have an update, even if I have to pay for it! Highly recommend this app.
Please please add more content 3,4,5 digits! I would live to have an update, even if I have to pay for it! Highly recommend this app.
2017-11-23	Kr*****	This app has made learning math so much fun. I love it!!!
This app has made learning math so much fun. I love it!!!
2017-02-03	Li*****	Simple. Well-executed. Effective. A bargain.
Simple. Well-executed. Effective. A bargain.