Harmonizer vs J.J.Moon AUv3 Plugin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonizer
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Harmonizer - AUv3 is a real-time vocal harmonizer for iPhone and iPad. Sing into a microphone, select piano keys or chord pads, and hear live harmonies with low latency. Use it as a standalone instrument or load it as an AUv3 effect in compatible hosts such as GarageBand and Logic Pro for iPad. Key Features: - Live Vocal Harmonies: Process your voice in real time with harmonies based on held notes, piano keys, chord pads, or connected MIDI input. - Standalone and AUv3: Use Harmonizer as a standalone app or as an AUv3 audio effect in compatible music apps. Record the harmonized result directly in your host project. - Chord Pads: Play and hold chords with touch pads. Move between pads naturally, prepare the next chord while another is held, and use multiple octave ranges within each pad. - Audio Controls: Adjust dry vocal level, harmony level, output gain, and, in the standalone app, reverb amount and space preset. - Custom Chord Sets: Create, rename, duplicate, edit, and delete chord sets for different songs or performances. Choose the number of pads, chord roots, qualities, octaves, and pad layouts. - Piano Keyboard: Play with a multitouch piano keyboard designed for live performance. Choose Glide mode for sliding notes or Scroll mode to move across the keyboard while continuing to play. - iPad Dual Keyboard: On iPad, use two independent keyboard rows with separate positions for wider playing ranges. - MIDI Input: Use connected MIDI keyboards and controllers to play harmonies. MIDI works with chord pads and keys, including AUv3 host MIDI where supported. - MIDI Mapping: Map MIDI notes to chord pad positions and map MIDI knobs to key mixing controls such as Dry, Harmony, Reverb, and Output level. - Hand Control: Optionally control chord pads using the front camera. Hover over a pad with your hand and pinch to hold its chord. Includes a short tutorial plus low-light, no-hand, and multiple-hand guidance. - Local Processing: Microphone audio, camera input, chord sets, and performance settings stay on your device. Harmonizer does not upload or sell your audio or camera data. - Apple Intelligence Chord Progressions - Describe a mood, style, key, or progression idea to generate a named playable chord set with a short description; preview each chord, edit it, then save and use it live in Harmonizer. Requires a compatible device with Apple Intelligence enabled and availability may vary by language and region. Enjoy!
J.J.Moon AUv3 Plugin
Enhance your acoustic guitar sound with this AUv3 plugin. It offers detailed control over body, air, and string tones, plus compression, stereo width, and spatial effects. Try it free for seven days before a one-time purchase unlocks all features permanently.
- Acoustic guitar curve engine
- Multi-band EQ shaping
- Optical compressor
- Stereo micro-pitch widening
- Short stereo double and room bloom
- Fifteen factory presets
- Customizable panel finishes
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Body, air, and string detail — the shape of a well-mic'd acoustic, without a rack of EQ. jj-moon is an acoustic-guitar curve engine in a single AUv3 insert. Four blocks in signal order, each with its own on/off, plus a master strip. SHAPE — A fixed multi-band target aimed at great acoustic recordings: rumble out, body in, boxiness out, soft mid dip, string presence, air on top. Three voices — Steel, Nylon, Flamenco — share the same knobs. One Curve amount for how far you go, Wood for body vs sparkle, Presence for the strings. This is the block the whole plug-in is built around. COMP — An optical compressor with program-dependent release. Soft by design for acoustic dynamics. One Comp knob for threshold, ratio and make-up together, plus Attack and Release. A gain-reduction meter shows what it is doing. WIDTH — Stereo micro-pitch and short delay (the same family of trick as a classic microshifter), with a Focus crossover so the body stays centred while the highs open up. SPACE — A short stereo double with gentle flutter, into a soft acoustic room bloom. Not a spring tank — just a little air around the instrument. FIFTEEN FACTORY PRESETS Default, Fallen Leaf, Fingerstyle, Piezo Soft, Stereo Porch, Close Mic, Moon Room, Strum, Curve Only, Nylon, Concert Hall, Spanish Soft, Flamenco, Rasgueado, Soleá. Save your own from the preset window; swipe left to rename or delete. WORKS WHERE YOU WORK An Audio Unit v3 effect: GarageBand, Logic for iPad, AUM, Cubasis, BeatMaker, and any other AUv3 host. The included app is a working player — six acoustic demo parts are bundled (steel + nylon), or run your own playing through the microphone. The panel is drawn procedurally rather than assembled from bitmaps, so it stays sharp at whatever size your host gives it, on a phone or a 13-inch iPad. Moonlight, Slate, Field Green, or Tweed finishes. FREE TO TRY Seven days free from first launch. No account, no signup, no subscription. After that, one purchase unlocks it permanently on all your devices. If you do not buy it, the editor keeps working and audio passes through dry — nothing you built disappears. jj-moon is an original effect. Preset names point at a feel or a place. It is not affiliated with, endorsed by, or associated with any artist, label, or other plug-in maker, and does not recreate any particular recording.
Screenshots
Verdict
The clearest difference is in-app purchases: Harmonizer at none against J.J.Moon AUv3 Plugin's 1. J.J.Moon AUv3 Plugin's advantage is update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. J.J.Moon AUv3 Plugin sells 1 one-off in-app purchase. Harmonizer asks for nothing beyond the download.
Harmonizer ships an update every 2 months, J.J.Moon AUv3 Plugin weekly. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.
| Parameter | Harmonizer | J.J.Moon AUv3 Plugin |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 20 MB | 8 MB |
| Age rating | 4+ | +4 |
| Developer | Peter Hafner | Petar Gerov |
In-app purchases
Harmonizer
No in-app purchases
J.J.Moon AUv3 Plugin
- jj-moon Unlock$2.99









