CR-5k is a multimedia app designed by David Rochaix for iPhone, offering a nostalgic nod to the simplicity of eighties instruments. Transforming your device into a pocket beat making companion, CR-5k focuses on a pure interface to reflect the raw heritage of that era without distractions.

With 12 original high-quality double-samples, 24 combinable preset patterns, and 8 preset fill-ins, CR-5k provides a range of features for creating unique beats. The app includes 7 arranger variations, 2 rhythm memory registers, and a shuffle mode in 3/4 signature. Additionally, users can adjust instrument accentuation, utilize full machine state auto-save, and enjoy background audio playback enabled along with Audiobus V3 and InterApp audio support.

For added customization, bonuses accessible in the device settings allow users to alter pattern playback, utilize an alternative "Rock" drum kit with integrated effects, and apply various built-in audio effects like Equalizer and Distortion. CR-5k also offers global effects such as Delay and Reverb, instrument muting, and synchronized register auto-switching modes for enhanced creativity.