1. sylsau's Avatar

    I create that thread to present your Abacus Counting Frame, a free application letting you to count and calculate like in the past. Abacus Counting Frame is available on Google Play Store : https://play.google.com/store/apps/d...ssaurel.abacus

    You can discover Abacus Counting Frame in action in video on Youtube :

    The Abacus is a calculating tool, also called a counting frame, that was used in Europe, China, Japan and Russia, centuries before the adoption of the written Hindu-Arabic numeral system.

    Abacus offers you to discover both categories of abacuses :
    - those in base 10 well known in Europe an Russia in which each wire has 10 beads. Each bead represents, according the wire where it is, a unit, a hundred, a thousand, ...
    - those in mixed base (5,2) or (4,1) for whose each wire has 2 parts : a left part where beads value 5 units (or 5 hundreds, 5 thousands, ... according their position on the wire) and a right part where beads value 1 unit (or 1 hundred, 1 thousand, ... according their position on the wire). These abacuses are mainly present in Asia (China, Japan, ...)

    Some screenshots :

    * Main screen

    * Classic Abacus

    * Chinese Abacus

    * Japanese Abacus

    * Prefs

    The Abacus application lets you to write numbers and to discover their representation in decimal system at the bottom of the screen. You can also make operations like addition, subtraction, multiplication and division. Kids will love rediscover this old object on smartphones while the oldest will remember their younger years with happiness.

    It is also possible to choose the number of wires that you want to display on the screen. A sharing feature is also available to share numbers created with your friends via the social networks.

    A Pro version with No Ads is also available here : https://play.google.com/store/apps/d...rel.abacus.pro

    Don't hesitate to give it a try to Abacus and give me your feedbacks or ideas for new features.


    10-26-2016 03:39 AM
  2. B. Diddy's Avatar
    Thanks for the link! I've always been curious about how to use an abacus ...
    10-26-2016 10:07 AM
  3. sylsau's Avatar

    I updated Abacus Counting Frame in version 1.1 to add support for Spanish Language. Don't hesitate to tell me if you want other languages support.

    Note that I have also written a tutorial to learn you how to use an Abacus to make operations : https://hackernoon.com/learn-to-coun...s-ef194d15ea6e


    06-19-2017 05:27 AM
  4. sylsau's Avatar

    Abacus Counting Frame is always available on the Google Play Store : https://play.google.com/store/apps/d...ssaurel.abacus

    Don't hesitate to give it a try and give me your feedback.

    07-19-2017 01:43 AM
  5. Son zero's Avatar
    useful app, thanks
    07-26-2017 01:18 AM
  6. sylsau's Avatar
    useful app, thanks
    Thanks. Don't hesitate to leave me a review on the Play Store if you like it
    07-26-2017 07:09 AM

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