230+ iOS apps curated and reviewed
The best audio unit apps on iPhone average 4.7★ across 230+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
This professional synthesizer app offers 300 presets designed by top sound engineers for iPad users. Get it now for free! Visit Audiokitpro.com/synth to learn more.
Discover a high-quality bundle of 4 pro audio units offering 30 modes for synthesis and effects inspired by popular eurorack modules. Explore polyphonic oscillators, modal synthesis, resonators, and granular sampling with advanced modulation features. Integrate these instruments seamlessly into your music production workflow using popular DAW or AU hosts.
This audio effect plugin is a simple dynamics processor with two modes and two controls, allowing users to easily dial-in compression and limiting effects to enhance their audio tracks. With a straightforward interface and preset options, it's a great tool for musicians and producers looking to add punch and polish to their sound.
An innovative wavetable synth app for iPhone, offering a seamless sound designing experience with a rich library of presets and advanced features such as real-time modulation feedback, cross-platform cloud synchronization, and stereo oscillators with unison voices. With support for AUv3, Files App Integration, and a 32-step arpeggiator, this app is a must-have for music producers on the go.
This free audio plugin introduces organic-sounding pitch fluctuations to your instruments, making them sound more natural and less sterile. Try it out to add subtle instabilities or intense pitch drifting to your tracks and bring a more dynamic sound to your music.
This audio effect application provides a vibrato chorus filter that adds depth and color to instruments, with features like multi-stage driven filters and a multi-voice vibrato chorus. Try it out to add psychedelic soul to your sound with its easy-to-use sections for filter, vibrato/chorus, and mix control.
This studio compressor plugin offers a range of features, including external sidechain input, sidechain high-pass filtering, and input/output level controls, allowing for precise sound tuning. With its expanded capabilities and user-friendly interface, it's a great tool for producers and musicians looking to take their sound to the next level.
This audio effect is a unique delay plugin that combines two delays, allowing users to create complex soundscapes with filtered and manipulated audio. Try it out to add rich, layered textures to your music with its extensive range of tonal shaping and rhythmic effects.
This audio plugin emulates the warmth, noise, and character of old tape cassettes, allowing users to add a vintage sound to their tracks or push the parameters for experimental soundscapes. With a range of adjustable parameters, including saturation, noise, and wow & flutter, users can easily achieve a classic sound or create something entirely new - try it out and bring a new level of texture and warmth to your music.
Transform your voice with Voice Synth, a live voice processor and synthesizer featuring Vocoders, Auto Pitch, Harmonizing Pitch Shift, and more. Enhance your vocal performance like never before - try it now!
Animoog Z Synthesizer: Experience the ultimate in multidimensional sound design with a visually captivating synthesizer that enables seamless exploration through orbit paths. Create endless sonic configurations with polyphonic modulation, customizable timbres, and a wide array of dynamic effects for an immersive music production experience.
This audio plugin creates a small delay between the left and right channels of a stereo signal, producing a wide and natural sound image through the Haas effect. With a simple control, you can easily add this effect to your audio and even modulate it for a pitch-shifting sound, all for free.
This audio effect adds life and character to your tracks by allowing you to create customisable graphs to modulate various parameters, such as filter cutoff and amplitude. With its intuitive interface and range of features, you can sculpt unique sounds and rhythms, and get started with 22 pre-loaded presets.
This music editing application allows users to easily mix, edit, and create music tracks with a user-friendly interface. Start creating and editing music effortlessly today!
This audio processing tool is a seven-band equalizer that can be used within a compatible host application, offering a range of filter types and customizable settings. It allows users to adjust and fine-tune audio frequencies, and can be used to enhance and shape sound to their liking.
This audio effect plugin adds life and character to your music tracks with a customizable graph that modulates amplitude, filters, and resonance. With MIDI routing and a variety of presets, you can create unique sounds and dynamic effects to enhance your music - try it out and start sculpting your sound today!
This audio plugin helps you add power and impact to your tracks with a modern, ultra-aggressive compression sound, allowing for true parallel compression routing and advanced tone shaping features. Download the free version to get started or upgrade to the full version to unlock additional features and presets from top producers.
This high-quality chorus plug-in offers a rich, Roland Dimension D style effect without muddying the low end, with added versatility through its feedback control for flanging effects. Ideal for thickening electric guitar or synth parts, it brings a superb chorus algorithm to your favorite iOS DAW, allowing for a wide variety of effects.