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Best Harmonizer Plugin Apps

0+ iOS apps curated and reviewed

4.3 avg rating
15 free apps
Updated June 2026

Looking for free harmonizer plugin apps? 15 of our 0+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Harmonizer Plugin Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Harmonic Exciter AUv3 PluginHarmonic Exciter AUv3 Plugin$8.993.4★ (8)NoNoAug 2026
2Acapella from PicPlayPostAcapella from PicPlayPostFree4.6★ (25K)NoYesSep 2026
3Crystals Harmonizer®Crystals Harmonizer®$7.99 was $14.994.6★ (19)NoNoJun 2026
4Moises: The Musician's AppMoises: The Musician's AppFree4.7★ (28K)NoYesSep 2026
5Vocal Soloist AUv3 PluginVocal Soloist AUv3 Plugin$9.993.0★ (38)NoNoSep 2026
6Shimmer AUv3 Audio PluginShimmer AUv3 Audio Plugin$7.994.2★ (31)NoNoAug 2026
7Spire: Music Recorder & StudioSpire: Music Recorder & StudioFree4.8★ (16K)YesNoSep 2026
8SoundLab - Audio EditorSoundLab - Audio EditorFree4.6★ (14K)NoYesSep 2026

Top Picks for Harmonizer Plugin

Harmonic Exciter AUv3 Plugin#1

Harmonic Exciter AUv3 Plugin by 4Pockets.com

AUv3 Compatible Audio Plugin
Editor's Choice
🎵 Music
3.4(8 ratings)
$8.99
Harmonic Exciter AUv3 Plugin screenshot 1
Harmonic Exciter AUv3 Plugin screenshot 2

Enhance your audio mixes by adding clarity and edge to sounds. This plugin synthesizes additional harmonics to make instruments cut through, simulate saturation, and achieve a more pleasing tonal content than traditional EQ.

Acapella from PicPlayPost#2

Acapella from PicPlayPost by Mixcord Inc.

Sing & Collab Music Maker
Strong Contender
🎵 Music
4.6😐(25K ratings)
FreeIn-App Purchases
Acapella from PicPlayPost screenshot 1
Acapella from PicPlayPost screenshot 2
Acapella from PicPlayPost screenshot 3
Acapella from PicPlayPost screenshot 4
Acapella from PicPlayPost screenshot 5
Acapella from PicPlayPost screenshot 6

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.

What We Love

  • 🎶 Great app for singing and harmonizing
  • 👍 Easy to use and collaborate
  • 💡 Allows for creative expression

Room to Improve

  • 🔒 Premium features locked behind paywall
  • 🐛 Frequent crashes and bugs
  • 🔌 Audio sync and latency issues
  • 🤔 Confusing UI and navigation
Crystals Harmonizer®#3

Crystals Harmonizer® by Eventide

Iconic Pitch, Delay & Reverb
Worth Considering
🎵 Music
4.6(20 ratings)
$7.99
Crystals Harmonizer® screenshot 1
Crystals Harmonizer® screenshot 2
Crystals Harmonizer® screenshot 3

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.

More Harmonizer Plugin apps to explore

FAQ about Harmonizer Plugin

What are the best harmonizer plugin apps for iPhone?
Harmonic Exciter AUv3 Plugin tops our harmonizer plugin apps ranking as of June 2026, with a 3.4-star average from 8 App Store ratings, and it's priced at $8.99.
Yes — 15 of the top harmonizer plugin apps we rank are free to download, including Acapella from PicPlayPost and Moises: The Musician's App.
Harmonic Exciter AUv3 Plugin has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
Harmonic Exciter AUv3 Plugin is used to add clarity, edge, and saturation to audio by synthesizing additional harmonics. It helps instruments cut through a mix and can simulate valve or transistor-based distortion.
It works by adding multiples of the fundamental frequency (harmonics) to a sound. This process can make a sound appear brighter and punchier, similar to how synthesis creates complex waveforms from simple ones.