250+ iOS apps curated and reviewed
If you already know Harmonizer audio effect, this is the deeper bench. 250+ harmonizer audio effect apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $1.99 | 3.0★ (9) | No | No | Aug 2026 |
| 2 |  | Free | 4.6★ (25K) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.6★ (4.4K) | No | Yes | Aug 2026 |
| 4 |  | $7.99 was $14.99 | 4.6★ (19) | No | No | Jun 2026 |
| 5 |  | $1.99 | 3.1★ (7) | No | No | Jul 2026 |
| 6 |  | $9.99 was $24.99 | 4.3★ (8) | No | No | Jun 2026 |
| 7 |  | Free | — | No | Yes | Aug 2026 |
| 8 |  | Free | 4.7★ (32) | No | No | Aug 2026 |
This real-time audio effect app shifts pitch and adds harmonies to your original sound. It functions as an Audio Unit plugin or a standalone effect using your device's microphone or external audio interfaces. The pitch shifting preserves the original timing and tempo.
Create multi-frame music videos and collaborate with musicians worldwide. This app offers multitrack recording, advanced audio editing tools, and social sharing capabilities. Record songs, import videos, and enhance your sound with professional-grade effects.
Edit and record music, voice, and other audio with a professional suite of tools. Features include cut, copy, paste, and a variety of audio effects like echo and noise reduction. Supports numerous file formats and cloud storage integration.
This app offers advanced pitch shifting, delay, and reverb effects inspired by a classic hardware unit. Create expansive, modulated soundscapes for instruments and vocals, with real-time control over parameters.
This app offers four distinct modes to add harmony and depth to your monophonic audio input, whether it's vocals or instruments. Explore real-time chord harmonization, intelligent key-based harmony generation, interval shifting, and octave layering for a richer sound.
This audio unit generates up to 8 additional voices from any audio input by multiplying and shifting pitch. It simulates analog synthesizer unison effects for fattening sounds and adding presence, with individual voice transposition capabilities.
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.
Explore a diverse collection of sound effects and pure music, from nature sounds to applause. Record your own voice to create custom soundscapes and access a knowledge base to deepen your understanding of audio.
Easily create custom audio mixes and music medleys with a simple interface. Combine multiple audio files, trim clips, and save your creations to personalized playlists for convenient playback.
This app offers a professional multi-track audio editor and real-time effect processor. Create, record, mix, and master audio with advanced tools and a variety of effects, all from your mobile device.
This multitrack audio editor allows you to record or import audio, then perform detailed edits like cutting, copying, and pasting. It offers a suite of filters and special effects, with advanced features available through in-app purchases. Mix multiple tracks and export your creations in various formats.
Transform your iPhone into a powerful audio component with advanced digital filtering and sound adjustment features. Enhance bass, vocals, and overall sound quality with a 10-band equalizer and various effects. Play music and movies from your local files, manage playlists, and even cancel vocals.
This audio effect plugin creates a unique sound with increased sustain and gentle, LFO-modulated vibes. It functions as an AUv3 effect for hosts like GarageBand or as a standalone app for real-time audio input processing.
This app allows you to import audio files from your device, then cut, trim, and insert silence or other audio. It also offers advanced features like source separation for vocals and accompaniment, song mixing, and a variety of audio effects. Finally, export your edited audio in various formats and sample rates.
This app allows users to create vocal harmonies by singing along to a melody. It synthesizes up to three harmony voices in the user's own voice and can be controlled via MIDI input or used as an extension in other music production apps.
Create dynamic audio transitions for music production. This plugin offers a multi-FX system with 18 effect modules and a motion sequencer for building excitement and adding ear candy to your mixes. Ideal for build-ups, drops, risers, and sweeps.