Mikrosonic has released RD4 – a groovebox app formerly only available for Android devices – for iOS.

Groovebox is a music making app with virtual analog synthesizers, drum machines and effects.

Feature Overview

Mixer

• 4 channel rack mixer
• Instrument selection for each channel
• Volume control with level meter per channel
• Direct audio effect channel assignment
• Tempo control with tap tempo
• Channel mute and solo

Sequencer

• 2 banks with up two 8 bars per instrument
• Adjustable play modes from 1 to 8 bars and random modes
• Song Mode with a length of up to 99 bars

Choose between two virtual analog synthesizers and the drum machine for each channel:

Analog

• Modeled after legendary monophonic synths of the ’70s
• For fat sounding bass and powerful lead sounds
• 3 oscillators with 6 different waveforms
• Each oscillator can be tuned precisely and has a warmth control for the typical analog sound
• Attack, Decay, Sustain and Release envelope generator
• Pitch wheel
• Low-pass filter (24dB/oct, 4-pole) with knobs for cutoff, resonance and an Attack/Decay/Sustain envelope generator
• Recording of played notes in real-time
• Piano Roll for editing recorded notes comfortably
• Or compose by drawing notes directly with the piano roll in 1/16 or 1/32 resolution
• Piano roll editing features: Transpose Pattern, Shift Sequence and Quantize Pattern

Bassline

• Reminiscent of the legendary 303 synthesizer
• Create bubbling basslines and screaming lead sounds
• Successor of the famous synthesizer Rubberduck from d-lusion
• High-quality low-pass filter with resonance, cut-off, and envelope controls
• Oscillator with 4 types of waveforms
• Real-time step sequencer with accent and slide

Beats

• Program beats with 10 classic drum kits: 808, 909, 606, CR-78, Linn, KR55, RX11, RZ1, DMX, DPM48
• Booming kick drums, snappy snares and throbbing percussions
• 8 channels per drum kit
• Punch control for volume and envelope adjustments
• Accent programmable for each drum channel
• Free assignable effects for each drum sound
• Channel mute, Closed Hi Hat mutes the Open Hi Hat
• Real-time pattern based step sequencer

Audio effects:

• 5 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:

• Multi-touch control
• Live session recording
• Audio loop export feature
• SoundCloud Sharing Kit integration
• Session save capability
• Cut/copy/paste pattern

RD4 is available in the App Store.

If you’ve used RD4, leave a comment and let us know what you think of it!