Mark Bersalona
Tutorials are actually better than all the websites I've found explaining how to perform arithmetic on an abacus. The challenges and tests are surprisingly difficult at times. I've tried using other apps for drilling myself on an actual abacus, but the features in this app combine everything I was hoping for to learn how to use an abacus. Love the different palettes for the built-in abacus, the sound effects - you can tell it's been a labor of love. And it's free of ads!
18 people found this review helpful
A Google user
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I like the straight forward simple interface and visual design. The timed challenges are great. I think the tutorials need more work; they are somewhat limited and don't allow you to experiment. They guide you through in only one approach and need more and varied examples. Otherwise this app works as advertised and I recommend it as good practice for adults new to the soroban.
45 people found this review helpful
Doukas Coulbanis
It is a fantastic tool to learn soroban math and to promote mental arithmetic. I am learning it to teach my 14-year old twins, and using this app with it's instructions, practice exercises and challenges, it has taken me less than a week to master addition and subtraction of multiple digits. I've started learning multiplication and division, and this app is simply an indispensable aid to learning the soroban. Highly recommended, simple, elegant, to-the-point with absolutely no noise!
10 people found this review helpful