Japanese Soroban Jr. at Mac App Store analyse

App power index: 100 (based on ranks around App Stores today)
Utilities Finance
Developer: Peter Olafson
Price: 0 free
Current version: 1.1, last update: 7 years ago
First release : 12 Jul 2010
App size: 5.64 Mb
4.6 ( 4306 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


Note: This is a utility, not an educational tool. It is intended for people who know how to use an abacus. No instructions are pictured or offered(and none are suggested in the description) but there is a link on my website for instructions on how to use one. If you need an app that walks you through basic calculations this is not the one for you.


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A classic 13 row Japanese Soroban. There is no digital readout. I wanted to keep it pure(on an iPhone).

The same functionality of the iPad version only smaller.

Directions: Tap a bead to raise it up or down. Tapping a lower bead moves the ones above it. Tapping a higher bead moves any below it.
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Available in countries
Country Price
USA 0.99 USD
Available for devices
iPhoneFirstGen, iPodTouchFirstGen, iPodTouchSecondGen, iPhone3G, iPhone3GS, iPadWifi, iPad3G, iPhone4, iPodTouchThirdGen, iPodTouchFourthGen, iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus,