250+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our audio unit extensions list covers 250+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (43) | No | No | Aug 2026 |
| 2 |  | Free | 4.9★ (27K) | No | No | Aug 2026 |
| 3 |  | Free | 4.7★ (32) | No | No | Aug 2026 |
| 4 |  | Free | 4.8★ (35) | No | No | Aug 2026 |
| 5 |  | Free | 4.6★ (772) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.5★ (37) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.9★ (1.8K) | No | No | Aug 2026 |
| 8 |  | Free | 4.6★ (76) | No | No | Aug 2026 |
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 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 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 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.
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.
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 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.
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.
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 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.
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.
This audio effect plugin generates natural resonances to add warmth and fullness to instruments or recordings. It offers controls for acoustic body characteristics and includes an additional reverb effect for standalone use. The app utilizes unique, realistic algorithms for its sound shaping capabilities.
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 app adds harmonics to sound by folding waveforms. It's ideal for enhancing synth leads, transforming drum loops, and creating ambient drones. Customize folding thresholds and modulation for unique sound design.
