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Abacus' brain

Abacus' brain
  • Price: $1.99 In Apple Store
  • Category: Games
  • Updated: 2010-07-12
  • Current Version: 2.0
  • 2.0 (iOS 4.0 Tested)
  • Size: 1.90 MB
  • Language: English, Japanese
  • Seller: hiroyuki nisiguti
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 3.1.3 or later
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The mental calculation speed rapidly becomes early by putting the abacus in the head. This software is an application program that sequentially adds ten figures that appear one after another, and becomes familiar with the abacus. The level of the….. Read more

What's New in Version 2.0

iOS4 compatibility multitasking.
iPhone4 compatibility Retina Display
Design change.
Equipped with score function.

iPhone Screenshots

Abacus' brain iPhone Screenshot 1
Abacus' brain iPhone Screenshot 2
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Abacus' brain iPhone Screenshot 5

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Customer reviews

Rated 4/5 based on 2 customer reviews.


4/5 stars
Good, but I wish it had a couple more functions

This is the best app that I've found for drilling rapid addition on the abacus. I use it daily, but I do wish three things were different. 1) that you could turn off the sound. I've had to tuen off my ringer to avoid the sound, then forgotten to turn it back on an missed calls. 2) better instructions. I didn't realize you have to pass a speed round in order to practice with more than 1 digit. 3) Addition only. I wish you could choose subtraction only or mixed
Addition and subtraction. Simple multiplication or division would be nice too. Overall I really enjoy it, hopefully new versions will include these features.

4/5 stars
Good addition exercises but needs subtraction, multiplication and division.

I got this for my 7-year-old son but I enjoy working on it as well. Too bad the drill only comes with addition. I will like it a lot more and will highly recommend it if the update will add the mixed drills. One can grow out of the addition exercise fast.

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