Harmonizer vs J.J.Midnight AUv3 Plugin
Price, ratings, monetisation and update history for both apps, side by side โ 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.Midnight AUv3 Plugin
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An electric guitar effect for the laid-back sound: squashed until nothing jumps out. Just past clean. Wobbling a little. One repeat behind. That sound is not one pedal โ it is a whole vintage clean chain, and jj-midnight is all of it in a single AUv3 insert. Four blocks in signal order, each with its own on/off switch, plus a master strip. COMP โ An optical compressor with program-dependent release, the way a real opto box behaves: one knob for threshold, ratio and make-up together, so it squashes without asking you to think about it. A gain-reduction meter reads out what it is doing. This is the block the whole plug-in is built around. DRIVE โ Asymmetric soft clipping voiced for second harmonic rather than fizz, a tone rolloff, and a 1x12 cabinet with a movable mic position. Low gain on purpose. It goes from clean with weight to the edge of breakup and stops there. WOBBLE โ Amp-style amplitude tremolo with an LFO that morphs from a sine sway to a hard chop, free-running or synced to your host's tempo. SPACE โ One slapback repeat with no feedback, into a spring tank with dispersion allpasses for the chirp a real tank makes. THIRTEEN FACTORY PRESETS Default, Laid Back, Escondido, Porch Light, Whisper Trem, Magnolia, Breeze, Midnight, Sensitive Kind, Faded, Cassette, Night Drive, Flat & Even. 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, so you can hear the plug-in on a real guitar part before you open a DAW at all โ two dry recordings are bundled, or run your own playing in 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. 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 โ nothing you built disappears. jj-midnight 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.
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Verdict
The clearest difference is in-app purchases: Harmonizer at none against J.J.Midnight AUv3 Plugin's 1. J.J.Midnight 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 ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. J.J.Midnight 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.Midnight AUv3 Plugin weekly. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.
| Parameter | Harmonizer | J.J.Midnight AUv3 Plugin |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details โ not scored | ||
| Size | 20 MB | 6 MB |
| Age rating | 4+ | +4 |
| Developer | Peter Hafner | Petar Gerov |
In-app purchases
Harmonizer
No in-app purchases
J.J.Midnight AUv3 Plugin
- jj-midnight Unlock$2.99
Questions
Is Harmonizer free?
Is J.J.Midnight AUv3 Plugin free?
Do Harmonizer or J.J.Midnight AUv3 Plugin have ads?
Which is updated more often, Harmonizer or J.J.Midnight AUv3 Plugin?
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