Japanese Soroban Jr.
iOS iPhone Utilities
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.
Added unit markers.