227+ iOS apps curated and reviewed
The best audio unit apps on iPhone average 4.6★ across 227+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
This powerful wavetable synthesizer app offers an intuitive workflow for creating new sounds. It features a rich library of wavetables, inspiring factory presets, and real-time modulation feedback for sound design.
This is a free, open-source professional synthesizer app for iOS devices. It offers over 300 presets, MIDI support, a sequencer, and vintage-inspired filters. Learn music production basics and create your own sounds.
This audio plugin emulates the warm, noisy, and characteristic sound of vintage tape cassettes. It offers enhanced saturation, a new impulse response, and real sampled tape noise for a more authentic vintage audio experience. It can be used on entire tracks or individual channels for added texture and movement.
This audio effect plugin adds organic pitch fluctuations to your music, ranging from subtle natural variations to intense drifting. It helps break digital perfection and add richness to your tracks.
This audio effect plugin offers advanced compression with new features like external sidechain input and a sidechain HPF control. It allows for cleaner sound with full bandwidth control and includes input/output level adjustments for easier tuning.
Explore multidimensional sound design and performance with this polyphonic synthesizer. Create unique evolving soundscapes by navigating sonic universes and sculpting fluid sounds. Features a built-in keyboard, MPE support, and a diverse library of timbres.
This app provides a bundle of four professional audio unit synthesizers and one effect, inspired by popular eurorack modules. Explore diverse sound design possibilities with multi-mode oscillators, modal synthesis, string generation, and granular sampling. Compatible with DAWs and AU hosts for creative music production.
This audio effect application provides vibrato, chorus, and multi-stage driven filters for iOS. It enhances instruments like keyboards, guitars, and bass with depth, color, and psychedelic textures. The app functions as a container and documentation for an Audio Unit (AU) and requires a host application to operate.
This pro-sounding reverb plugin offers a simple, three-knob interface for iOS devices. It functions as an Audio Unit (AUv3) plugin within popular DAWs and is also open-source for developers to use in their own projects.
Transform your voice into a musical instrument with a suite of advanced audio effects. Create robotic voices, harmonies, and unique soundscapes using only your voice. Save and share your creations, or integrate them into your digital audio workstation.
This audio unit plugin creates a subtle delay between stereo channels, mimicking the Haas effect for a wider, more natural stereo image. It offers precise control over small delays and includes pitch modulation when changing delay times.
This is an Audio Unit EQ for iOS and macOS, functioning as a container for documentation. It provides a seven-band equalizer with various filter types, adjustable frequency ranges, and Q factors. It requires an Audio Unit host or DAW to operate.
This audio plugin splits a single audio signal into up to four separate frequency bands. It allows for unique multiband processing using effects plugins not originally designed for this purpose, offering flexibility in audio manipulation for music production.
This audio plugin offers powerful parallel compression for music production. Enhance drums and add weight to tracks with its aggressive sound. Unlock advanced controls and presets for surgical precision in the full version.
This real-time audio looper plugin offers a unique and characterful toolkit for producers and live performers. It combines intuitive design with deep features for creating layered grooves, complex textures, and evolving soundscapes. Advanced controls allow for independent speed and direction manipulation, tape-style effects, and MIDI integration.
This audio effect plugin offers simple compression and limiting for music production. It features two modes and two intuitive controls, making it easy to achieve desired dynamics without complex settings. Presets are included for quick adjustments.
This audio effect application provides a unique combination of oscillating reverb, modulation, and feedback delay. It can be used to create a wide range of subtle to extreme soundscapes within compatible music production software.
This audio effect plugin provides a high-quality chorus inspired by the Roland Dimension D, offering a versatile sound without muddy low end. It integrates seamlessly with iOS DAWs and supports expanded controls for easy tweaking.
This audio effect plugin adds dynamic character to music tracks by shaping amplitude, low-pass, or high-pass filters with a customizable graph. It can also be triggered by MIDI for advanced modulation. Explore 20 presets or create your own unique soundscapes.
This audio effect app provides two distinct delay units for complex sound manipulation. It features a three-tap delay with independent SVF filters and a feedback delay, offering extensive control over resonance, drive, and stereo separation.