RD3 - Groovebox is an app by mikrosonic in the Music & Audio category, listed since at least September 2020. It includes native code only for ARM 32-bit, so it won't run on 64-bit-only phones such as recent Pixels.
It asks for 2 permissions, 1 of them sensitive: modify shared storage.
What's new in v1.7.0
- 2nd Bassline
- New effect section
- 5 audio effects: Reverb, delay, phaser, filter and distortion
- Real-time controllable effects with X-Y control field
- 4 effect sends
- Chaining of effects
- Drum machine improvements
- Mute button for each drum channel
- Individual accent settings for each drum channel
Description
From the listing uploaded by “catappult”.
Create your own grooves and drum loops with RD3 - Groovebox!
*** If you have a high-end phone or tablet please check out the RD4 version with more features ***
Use your Android phone or tablet as a musical instrument and make your own electronic music tracks!
Recreate the sound of early electronic dance music with the RD3 – Groovebox that recalls two 303-style analog synthesizers, a drum machine plus reverb, distortion, phaser, filter and delay audio effects!
Developed in Berlin, RD3 - Groovebox is a pioneering audio app that lets you program your own grooves. This multi-touch enabled app makes it simple to invent unique loops and manipulate them with resonant filters and effects on the go.
Appropriate both for experienced musicians and novices.
RD3 is optimized for Android phones and tablets. Use it for live performances in landscape mode on phones and 7-inch tablets or use the additional special rack view on 10-inch tablets in portrait mode.
Loops you've created and exported with the Groovebox can also be automatically integrated into mikrosonic's audio mixer app SPC - Music Sketchpad.
Features
Channel mixer/sequencer:
- Volume control with level meter
- 4 bars with 16 steps per instrument
- 3 play modes: Solo, loop or random
- Channel mute
Two virtual analog synthesizers:
- 4 types of waveforms for each synth
- Reminiscent of the legendary 303 synthesizer
- High-quality or regular filter modes
- Real-time step sequencer for each synth
- Free assignable audio effects
Drum machine with:
- 10 drum kits: 808, 909, 606, CR-78, Linn, KR55, RX11, RZ1, DMX, DPM48
- Channel mute
- Punch control for volume and envelope adjustments
- Accent programmable for each drum channel
- Free assignable effects for each drum sound
- Real-time step sequencer
Audio effects:
- Reverb, distortion, filter, phaser and delay
- Real-time controllable
- X/Y control field for each effect
- 4 effect sends
- Chaining of 2 effects
Technical features:
- Special rack view in portrait mode for 10-inch tablets
- Multi-touch control
- Live session recording
- Audio loop export feature
- SoundCloud Sharing Kit integration
- Session save capability
- Cut/copy/paste pattern
- OpenSL support
- App2SD
System Requirements:
- Android 2.3 or higher
- Screen resolution 800×480 (WVGA) or higher
- 800 MHz CPU or faster supporting ARMv7
More details at: www.mikrosonic.com/rd3
Terms of Use: http://www.mikrosonic.com/terms
Privacy Policy: http://www.mikrosonic.com/privacy
Security & authenticity
Security rating: Warning
Signing certificate
Certificate issued to “mikrosonic”The developer's name — though anyone can put any name in a certificate.
Store checks and file details
Developer signature check failedMar 10, 2025
Antivirus scan passedNov 16, 2020
Signed byCN=Toine Diepstraten, OU=mikrosonic, O=mikrosonic, L=Berlin, C=49
Uploaded by “catappult”Platinum tier · 1,377 followers · uploading since 2018
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 (2)
RD3 - Groovebox requests 2 permissions, 1 of them sensitive.
Prevent the device from sleepingandroid.permission.WAKE_LOCK
Required hardware & features
Touchscreenandroid.hardware.touchscreen
RD3 - Groovebox APK: questions and answers
Can I install this APK over the version I already have?
Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.
Is the RD3 - Groovebox APK safe?
No one can promise that a file is safe, but some things can be checked. The source store flagged this file with a security warning. After downloading, check that the file's MD5 is cdafbd5464f3797fef3681349a5be9b7.