Comparison

polymachine vs Harmonizer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

polymachine

This app offers a unique approach to music creation by combining geometric principles with modular synthesis. Explore generative algorithmic drums, oscillators, and harmonies, with specialized tools for 808s and kick drum integration.

Highlights
  • Geometric music theory integration
  • Modular synthesis engine
  • Generative algorithmic drums
  • Oscillators and harmonies
  • 808 and kick drum linking
  • Log drum pattern generator
Features
Read full description

Geometry of Music + Modular Synthesis Powerhouse, Generative Algorithmic Drums + Oscillators and Harmonies. FL Soft Clip and FL Distortion on 808s. 808s tied to Kicks. Log Drum Pattern generator

About

Harmonizer

Read full description

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!

Screenshots

polymachine4 screens
Harmonizer4 screens

Verdict

The call

The clearest difference is update cadence: polymachine at weekly against Harmonizer's every 2 months. polymachine also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

polymachine ships an update weekly, Harmonizer every 2 months. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 8 level
polymachine versus Harmonizer: the parameters behind the verdict, then further details
ParameterpolymachineHarmonizer
PriceFreeFree
Rating2.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size93 MB20 MB
Age rating4+4+
DeveloperMike GaoPeter Hafner

In-app purchases

None

polymachine

No in-app purchases

None

Harmonizer

No in-app purchases

Questions

Is polymachine free?
polymachine is free to download, with no in-app purchases.
Is Harmonizer free?
Harmonizer is free to download, with no in-app purchases.
Do polymachine or Harmonizer have ads?
Neither polymachine nor Harmonizer shows ads.
Which is updated more often, polymachine or Harmonizer?
polymachine ships an update weekly, and Harmonizer every 2 months. Most recently, polymachine was updated on October 25, 2026 and Harmonizer on October 16, 2026.

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