KoAbacus - 주판, 주산, 암산 app icon

KoAbacus - 주판, 주산, 암산

Abacus , Korean Abacus & Mental Arithmetic

aboard · aboard.and.koabacus

Not rated yet 100K+ downloads v1.0 4.4 MB Android 5.0+ PEGI 3 · Everyone

Download APK 4.4 MB All versions
  • Signature matches the Google Play version Details

At a glance

Latest version
v1.0 (57)
Updated
Oct 1, 2026 (7 days ago)
APK size
4.4 MB
Requires
Android 5.0+ (API 21)
CPU support
Any (no native code)
Category
Education (app)
Listed since
Feb 7, 2021 (at least)
Permissions
11
Website
aboard.kr
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

KoAbacus - 주판, 주산, 암산 is an app by aboard in the Education category, listed since at least February 2021. It has no native code, so it runs on any Android processor.

It asks for 11 permissions, none of them sensitive. The app can read the advertising ID that ad and analytics services use.

What's new in v1.0

Landscape mode support

Description

From the listing uploaded by “appupdater”.

KoAbacus 1.0.57 - Korean Abacus & Mental Arithmetic The abacus is a calculating tool that was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere. * button function 6,5,4,3,2,1 : - positional number + , - , x , / : the four arithmetical operation & new number genernation 9, 8, 7, 6, 5 : bounds stat & end : result * Menu Button - Auto Test : Count, Delay - Speech : Start, End, +, -, *, / - Sound : Click Sound * Start Button LongClick - Abcus Clear * Menu Button LongClick - Volume Control (4.0 ~) * [-] [x] [/] button LongClick - Auto Mental Arithnmetic * Landscape mode support

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Oct 1, 2026.
  • Certificate issued to “aboard” This is the certificate of the Google Play version.

Store checks and file details

  • Developer signature verified Oct 1, 2026
  • Validated against Google Play Oct 1, 2026
  • Signed byO=aboard, C=ko
  • Signing certificate (SHA-1)82:54:36:51:07:47:AE:88:67:D1:CE:86:CC:59:7F:98:1E:D0:1B:A1
  • File MD5ba5e58f33b88d58c8715392ce21b8981
  • 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. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (11)

KoAbacus - 주판, 주산, 암산 requests 11 permissions, none of them sensitive.

Required hardware & features

KoAbacus - 주판, 주산, 암산 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 KoAbacus - 주판, 주산, 암산 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. After downloading, check that the file's MD5 is ba5e58f33b88d58c8715392ce21b8981.

Tags

aboard koabacus education

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