iPhone · iPad · Mac
SUS4 Drum Pad
Sixteen pads, 25 kits, a step sequencer and a looper for sketching beats.

SUS4 Drum Pad gives you sixteen pads, a 16-step sequencer and a live looper for sketching beats on iPhone, iPad and Mac. Choose from 25 kits, from acoustic and hip-hop to classic drum machines and Latin, African and Indian percussion, and start playing straight away.
The pads sit in a four-by-four grid, and a long press on any pad opens its own level and pan so you can balance the kit. In the sequencer you toggle steps on a grid, set the tempo, record pad hits straight into the pattern against a metronome, and save patterns to come back to.
When a groove works, export the pattern as an audio file to share, or record a pass of pad hits in the Looper and let it cycle while you listen back. The app is useful for sketching a groove quickly, demonstrating a rhythm to a collaborator, or practising timing when you do not have a kit to hand.
Available on
Goes well with
- SUS4 Loop BuilderRecord and stack loops on up to eight tracks until the groove locks in.
- SUS4 MetronomeSubdivision-aware metronome that keeps you honest.
- SUS4 Time TrainerTap to the click, then keep time when it drops out.
Made by a working recording studio
SUS4 is made by 4chordsStudios, a recording studio in a quiet UK village with a live room and a Dolby Atmos mixing room. We work with independent artists from the first session to release day and beyond.