Simple Soroban

Simple soroban (Japanese abacus, そろばん)

Btco · br.net.btco.soroban

5.0 out of 5 (1 rating) 1M+ downloads v2.1.4 4.6 MB Android 4.1+ PEGI 3 · Everyone

Download APK 4.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.1.4 (214)
Updated: Aug 25, 2026 (1 month ago)
APK size: 4.6 MB
Requires: Android 4.1+ (API 16)
CPU support: Any (no native code)
Category: Education (app)
Listed since: Mar 18, 2021 (at least)
Permissions: 1
Website: plus.google.com/+BrunoOliveira
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Simple Soroban is an app by Btco in the Education category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

It asks for 1 permission, none of them sensitive. It asks for the same permissions as version 2.1.2.

What's new in v2.1.4

* Layout and color palette adjustments * Bug fixes and performance improvements

Description

From the listing uploaded by “appupdater”.

This application is a simple Japanese abacus (soroban / そろばん). It has a free mode where you can use the abacus freely, and a challenge mode with 4 operations (addition, subtraction, one and two digit multiplication, and division) and 3 difficulty levels (easy, medium, hard) where you must race against the clock to perform calculations. Contains tutorials for: * basic concepts * addition * subtraction * one-digit multiplication * two-digit multiplication * division Also has a custom challenge mode where you can set the number of questions, type of questions and difficulty. (This is just a hobby project I'm doing for fun. This app is free and doesn't have in-app purchases or ads). [PERMISSIONS USAGE] This is a description of how permissions are used in this app. Vibrate: The application can vibrate the phone to give user feedback. This can be enabled/disabled in the Settings screen. [PRIVACY] This application does not collect or transmit any data. Your settings, ranking and challenge times are stored locally on your phone only. You can view the privacy policy here: http://bit.ly/simple-soroban-privacy

Version history

2 versions are listed, going back to v2.1.2.

v2.1.4 LATEST Aug 25, 2026 4.6 MB TRUSTED v2.1.2 Dec 4, 2025 4.7 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Aug 25, 2026.
Certificate issued to “Bruno Oliveira” This is the certificate of the Google Play version.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Aug 25, 2026
Validated against Google Play Aug 25, 2026
Signed byCN=Bruno Oliveira, OU=Unknown, O=Bruno Oliveira, L=Mountain View, ST=California, C=US
Signing certificate (SHA-1)93:8A:C9:1C:7B:90:5D:95:DE:51:12:72:80:20:8C:23:2F:E0:6B:87
File MD5a397605eed175f7f72dfb4aa9c6b7c32
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (1)

Simple Soroban requests 1 permission, none of them sensitive.

Control vibration android.permission.VIBRATE

Required hardware & features

Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape

Simple Soroban APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Simple Soroban APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is a397605eed175f7f72dfb4aa9c6b7c32.