This app was last updated about a month ago, but we’re including it for the way it works with SPC, listed above. RD3 may be one of the coolest, full-featured groove machines for Android. Now, it lets you create throw-back loops and grooves with its virtual analog bass synthesizer (which sounds like a 303) and a retro drum machine that bundles the sounds of eight classic kits from hip-hop and early electronic music (808, 909, 606, CR-78, Linn, KR55, RZ1, DMX). Loops are programmed with a real-time four bar step sequencer and can be exported to the SPC app for editing and arranging.

Create your own grooves and loops with RD3 - Groovebox.

Recreate the sound of early electronic dance music with an app that recalls an analog synthesizer and drum machine!

Developed in Berlin, RD3 - Groovebox is a pioneering audio app for Android that lets you program your own grooves. This multi-touch enabled app makes it simple to invent unique loops and manipulate them with a resonant filter on the go.

Appropriate both for experienced musicians and novices.

Loops you've created with the Groovebox can also be automatically integrated into mikrosonic's audio mixer app SPC - Music Sketchpad.

Musical Features:

- Virtual analog synthesizer

- 3 types of waveforms

- Reminiscent of the legendary 303 synthesizer

- High-quality or regular filter modes

- Drum machine with 8 drum kits: 808, 909, 606, CR-78, Linn, KR55, RZ1, DMX

- Real-time step sequencer

- 4 bars with 16 steps per instrument

- 3 play modes: Solo, loop or random

Technical Features:

- Multi-touch control

- Audio loop export feature 

- Session save capability

- Cut/copy/paste pattern

- App2SD

System Requirements:

- Android 2.1 or higher

- Screen resolution 480×320 (HVGA) or higher

- 550 MHz CPU or faster supporting ARMv7