239+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our audio unit extensions list covers 239+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.
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 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.
Experience classic 80s FM synthesizer and electric piano sounds with over 300 unique presets. This app offers professional-grade audio, extensive layering for expressiveness, and a full suite of effects. It functions as a standalone app and an AUv3 plugin for music production hosts.
This audio effect plugin provides a lush, one-button chorus inspired by analog synthesizers. It adds dimension and depth to music tracks with a dark, detuned character. A mix slider allows for blending the effect to your preference.
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 effect app allows you to add dynamic modulation to your music tracks. Create custom shapes to control various parameters like filter cutoff, resonance, amplitude, and mix for rhythmic and expressive sound sculpting.
This app offers professional piano and keyboard sounds for mobile devices. The free version provides access to high-quality piano sounds, with options to unlock more sound libraries and features through in-app purchases or by connecting Korg MIDI controllers.
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 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 enhances the sonic quality of your music by generating new harmonics, offering a more natural sound than traditional EQ. It provides detailed control over harmonic generation and signal mixing, and can be used within compatible music production apps.
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.
Enhance your audio with a dedicated tool for generating lower, deeper bass frequencies through harmonic saturation. This plugin offers detailed control over harmonic balance and frequency processing, allowing for precise sound shaping. It's designed to add richness and impact to dull-sounding bass tracks.
Create and edit your own music with this intuitive audio editing app. Easily cut, copy, paste, and mix audio, add sound effects, and record your own vocals. Perfect for aspiring musicians and hobbyists.
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.
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 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 app emulates a classic monophonic analog synthesizer with advanced DSP technology. It features three variable wave oscillators, dual ladder filters, an LFO, and two modulation busses for versatile sound design. An intuitive interface and extensive preset library make it ideal for creating thick bass and rich lead sounds.
This powerful noise gate plugin is specifically designed for guitar and bass. It offers beautiful analog tube coloration and a custom tube preamp virtual circuit for unique signal coloring. It functions as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect.
This audio unit provides a five-band equalizer for iOS devices. It features adjustable low shelf, high shelf, and three parametric filters with a boost/cut range of 24 dB. Designed for signal coloring, it can be used in mono or stereo configurations.
This music player allows real-time pitch shifting and a 31-band equalizer. It supports AUv3 effects, loop playback, and exporting processed audio. Import audio files from other apps or your music library.