Interval Music Compositor

Create music intervals for sports and education fast and easy.

Retorte Laboratories · ch.retorte.intervalmusiccompositor

Not rated yet 5K+ downloads v1.11.5 4.6 MB Android 8.0+ PEGI 3 · Everyone

Download APK 4.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.11.5 (11105)
Updated: Apr 26, 2026 (5 months ago)
APK size: 4.6 MB
Requires: Android 8.0+ (API 26)
CPU support: Any (no native code)
Category: Health & Fitness (app)
Listed since: Mar 9, 2021 (at least)
Permissions: 9 (1 sensitive)
Website: interval-music-compositor.retorte.ch/app
Developer contact: [email protected]

About this APK

Interval Music Compositor is an app by Retorte Laboratories in the Health & Fitness category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

Since version 1.8.2, the APK grew from 3.1 MB to 4.6 MB and the minimum Android version rose from 5.0 to 8.0. It asks for 9 permissions, 1 of them sensitive: read media audio. It asks for the same permissions as version 1.11.4. The app offers in-app purchases through Google Play.

What's new in v1.11.5

Prevents app from sleeping during playback when screen is off, or app is in background and further bug fixes.

Description

From the listing uploaded by “appupdater”.

The Interval Music Compositor is an Android app for the creation of music intervals (e.g. 30s music, 10s break, etc.) for the purpose of sports and physical education. Use it for your interval trainings or for circuit trainings at school or at your sports club. Just choose some tracks from your music collection, set the interval duration and you're ready to go! Suitable for: interval training (also HIIT for regimen like the ones of Tabata, Zuniga, or Timmons), circuit training, pyramid training, physical education, PE, sports, workout and the use as mixtape, or timer. BASIC AND PREMIUM MODE The basic version of the app is available for download free of charge. It contains all functionality needed for the normal use of the app. For a small one-time fee the premium mode can be unlocked via in-app-purchase. It adds additional, convenient features as for example the possibility to manage multiple track lists.

Version history

5 versions are listed, going back to v1.8.2. New versions arrive here every few months. Since v1.11.1 it requires Android 8.0+.

v1.11.5 LATEST Apr 26, 2026 4.6 MB TRUSTED v1.11.4 Apr 18, 2026 4.7 MB TRUSTED v1.11.2 Apr 11, 2026 4.6 MB TRUSTED v1.11.1 Feb 10, 2026 4.6 MB TRUSTED v1.8.2 May 17, 2024 3.1 MB TRUSTED

All 5 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Apr 26, 2026.
Certificate issued to “Retorte Laboratories” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Apr 26, 2026
Validated against Google Play Apr 26, 2026
Signed byCN=Unknown, OU=Unknown, O=Retorte Laboratories, L=Unknown, ST=Unknown, C=Unknown
Signing certificate (SHA-1)5D:D2:87:70:93:2A:D1:96:6E:2C:1C:5F:82:C8:A5:85:EB:57:18:BA
File MD50d8bd9487d8e104ce379dec4b340d381
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 (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (9)

Interval Music Compositor requests 9 permissions, 1 of them sensitive.

Read media audio Sensitive android.permission.READ_MEDIA_AUDIO
Foreground service media playback android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK
Full network access android.permission.INTERNET
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) ch.retorte.intervalmusiccompositor.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch

Interval Music Compositor APK: questions and answers

Is there a version of Interval Music Compositor for older Android phones?

The current version needs Android 8.0 or later. Version 1.8.2 is the newest listed build that installs on Android 5.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.8.2 · 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 Interval Music Compositor free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Interval Music Compositor 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 2 other versions checked. After downloading, check that the file's MD5 is 0d8bd9487d8e104ce379dec4b340d381.