Harmonicer vs VAMonoMkII
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Harmonicer
This app generates musical inspiration by combining MIDI quantization, harmonization, and arpeggiation. It offers extensive scale support and allows for the creation of complex chords and rhythmic patterns to enhance musical compositions.
- MIDI Quantizer with 20+ scales
- Custom scale support
- Harmonizer with up to 4 voices
- Arpeggiator with 10 modes
- Process MIDI from any source
- Standalone use with internal keyboard
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Instant Inspiration at Your Fingertips Harmonicer combines MIDI Quantizer, Harmonizer and Arpeggiator into one convenient package. At the core of Harmonicer lies its Quantizer feature with over 20 pre defined scales and support for custom scales. Whether you're a seasoned composer or a novice musician, Harmonicer empowers you to effortlessly create melodies that are harmonically rich and sonically captivating. Unlock Limitless Harmonic Possibilities Harmonicer's Harmonizer functionality takes your compositions to new heights by automatically generating lush chords and harmonies. With up to 4 additional voices and intuitive controls, you can explore a vast array of harmonic possibilities and infuse your music with depth and emotion. Unleash Your Creativity with Dynamic Arpeggiation With Harmonicer's Arpeggiator, intricate rhythmic patterns and melodic sequences are just a few taps away. Whether you're crafting pulsating basslines, mesmerizing synth leads, or intricate melodies, the Arpeggiator empowers you to infuse your tracks with movement and energy, adding a dynamic edge to your music. Combining Power and Versatility What sets Harmonicer apart is its seamless integration of these three powerful tools, allowing users to utilize them individually or in combination to achieve complex compositions with ease. Whether you're looking to fine-tune a melody, enrich your harmonies, or add rhythmic complexity, Harmonicer provides the tools you need to inspire your musical vision and bring it to life. Specs: - Quantizer with support for 20+ pre defined as well as custom scales - Harmonizer with up to 4 additional voices - Arpeggiator with 10 modes, note repeates, ratchets and more - Process MIDI from any source - Standalone use via internal keyboard Supports: - Standalone - AUv3
VAMonoMkII
This app is a virtual analog bitimbral synthesizer for iOS and macOS. It offers two 8-voice synthesizers with extensive modulation, classic analog filter models, and built-in effects. Create and export music with its sequencer and audio visualization tools.
- Virtual analog bitimbral synthesizer
- Dual oscillators with variable waveforms
- Transistor Ladder and Sallen-Key filter models
- Built-in effects suite (delay, reverb, chorus, etc.)
- 16-bar sequencer with piano roll and automation
- Audio Unit Extension (AUv3) support
- Ableton Link and MIDI 2.0 compatibility
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VAMonoMkII is a virtual analog bitimbral synthesizer for iPhone, iPad and Mac. It features two 8 voice synthesizer, effects, sequencer and audio visualization tools. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export. The bitimbral synthesizer consists of two synthesizer, which features two oscillators, two ADSR envelopes, resonant high pass and low pass filter and an amplifier per voice. The oscillators features continuously variable wave shape and wide variety of modulation. The filters are modeled on Transistor Ladder filter circuit and the Sallen-Key filter circuit for classic analog sound. The Effects include delay, chorus, flanger, reverb, eq and compressor. The sequencer features piano roll and parameter automation editor to program 16 bar pattern per clip. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. - Main Features - Virtual analog bitimbral synthesizer Two type of Lowpass filter, Transistor Ladder model and Sallen-key model. Maximum 8 voice polyphony. it depends on performance of the device it is running. Operate as monophonic or polyphonic. Patch points for modulation. Support MIDI 2.0 User Interface built by SwiftUI for improved performance. Built-in Sequencer. 16 bar patterns per clip. Total 8 clips. Piano Roll and Parameter automation. Support Audio Unit Extension (AUv3) Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Ableton Link, Bluetooth MIDI, MIDI In / Out. 360 bitimbral presets and more. - System Requirements - A13 Fusion or above is recommended. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension. Sound may be distorted if CPU of the device doesn't have enough power. If it happens reduce number of voices.
Screenshots
Verdict
The clearest difference is review sentiment: Harmonicer at 80% against VAMonoMkII's 0%. Harmonicer also leads on price ($4.99 vs $14.99) and update cadence (every 4 days vs every 11 months). VAMonoMkII's advantage is rating (5.0 vs 4.7). On ads, in-app purchases, monetization model 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
Harmonicer costs $4.99 and VAMonoMkII $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
VAMonoMkII holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 12 and 4 respectively. Written reviews complicate that: 80% of Harmonicer's written reviews are positive against 0% of VAMonoMkII's, so the app with the better star average is not the one people write more warmly about.
Harmonicer ships an update every 4 days, VAMonoMkII every 11 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Harmonicer | VAMonoMkII |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 4.7 (12 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 80.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 12 — better | 4 |
| Update frequency | Every 4 days — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, Mac |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 23 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Aras | Ryo Togawa |
Customer experience
Harmonicer
VAMonoMkII
In-app purchases
Harmonicer
No in-app purchases
VAMonoMkII
No in-app purchases









