Circle of Fifths

It`s a small lightweight application of Circle of Fifths.

WeSoftLab · com.gmail.wesoftlab.circleoffifths

Not rated yet 100K+ downloads v2.6 10.9 MB Android 6.0+ PEGI 3 · Everyone

Download APK 10.9 MB All versions

Signature matches the Google Play version Details

Watch the Circle of Fifths trailer on YouTube

At a glance

Latest version: v2.6 (26)
Updated: Sep 2, 2026 (1 month ago)
APK size: 10.9 MB
Requires: Android 6.0+ (API 23)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Music & Audio (app)
Listed since: Apr 30, 2023 (at least)
Permissions: 9
Developer contact: [email protected]

About this APK

Circle of Fifths is an app by WeSoftLab in the Music & Audio category, listed since at least April 2023. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2.4, the minimum Android version rose from 4.4 to 6.0. It asks for 9 permissions, none of them sensitive. It asks for the same permissions as version 2.4. The app can read the advertising ID that ad and analytics services use.

What's new in v2.6

- Improved performance - Fixed some bugs

Description

From the listing uploaded by “appupdater”.

It`s a small lightweight application of Circle of Fifths. In music theory, the circle of fifths (or circle of fourths) is the relationship among the 12 tones of the chromatic scale, their corresponding key signatures, and the associated major and minor keys. At the top, you have the key of C major, which has no sharps or flats in its key signature. Each stop on the circle as you go clockwise from C is a key with one more sharp than the previous key. Each stop as you go down counter-clockwise from C is a key with one more flat than the previous key.

Version history

2 versions are listed, going back to v2.4. Since v2.6 it requires Android 6.0+.

v2.6 LATEST Sep 2, 2026 10.9 MB TRUSTED v2.4 Aug 20, 2025 9.3 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 2, 2026.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Sep 2, 2026
Validated against Google Play Sep 2, 2026
Signed byL=Kyiv, C=UA
Signing certificate (SHA-1)84:BC:DC:6B:97:A4:FD:5F:1A:92:CA:26:94:AF:22:F8:5A:ED:07:CE
File MD57af6d73cbf25342d50d53c10ea0b7f6e
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 (9)

Circle of Fifths requests 9 permissions, none of them sensitive.

Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.gmail.wesoftlab.circleoffifths.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

Circle of Fifths APK: questions and answers

Is there a version of Circle of Fifths for older Android phones?

The current version needs Android 6.0 or later. Version 2.4 is the newest listed build that installs on Android 4.4 and later. Get version 2.4 · All versions

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 Circle of Fifths 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 7af6d73cbf25342d50d53c10ea0b7f6e.