Best BT 303 Pocket alternatives: apps like BT 303 Pocket

Rithmatic: FM Synth

FM synthesizer & AUv3 plugin

Free

This app is an FM synthesizer with a vast library of classic voices. It allows users to explore, learn, build, and blend sounds, and can be used as a standalone instrument or an AUv3 plugin within DAWs. It offers a visual representation of sound and a patch builder for understanding FM synthesis.

CID RIM - The Egg

Everything’s bettr w/ an egg

Free

Enhance your meals with a virtual fried egg topping. Perfect for quick meal additions or adding a fun element to your dishes. It's a simple, bold way to make any plate more appealing.

Synesthesia Synth

Audiovisual synthesizer

Free

An experimental audio-visual instrument that allows users to sculpt evolving spatial audio by manipulating floating capsules. Position, rotation, and pulse changes affect tone, texture, and synchronized particle generation. It's a visual synthesizer, not a game.

Strange Loop: Chaos Melody

Chaos Theory + Music Theory

Free

This app generates unique, non-repeating music using chaos theory and AI. Users can influence the composition by painting on mathematical attractors and mood pads, choosing from various scales, accompaniment styles, and synthesized sounds. It also functions as an AUv3 instrument and MIDI processor.

Omni: Pocket Synth

Chords, Strums & MIDI Out

Free

Create music with a touch-first instrument for chords, strums, and rhythmic ideas. Shape synth sounds, add effects, and send MIDI to other apps or hardware. Designed for fast, expressive musical performance without complexity.

Retro Synth - Syntophone

AUv3 Instrument: Learn Songs

Free

Create authentic retro music with this vintage-inspired synthesizer app. Explore sound design with tone controls and vibrato, or upgrade for premium waveforms and studio effects. Designed for instant musical creativity, it offers a portable music-making experience.