Musical Keyboard vs VAPolyQuad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Musical Keyboard
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A mini keyboard for your watch. How many times have you wanted to get a pitch only to realize you had to fire up your computer, or turn on your keyboard just to get a pitch? No need to find your guitar, just use the music keyboard on your watch! Fast, easy, obvious. Bonus screens contains guitar and ukulele pitches. Use the crown to change octaves or just press on the screen. If you don't have perfect pitch, but have great relative pitch, this is a great tool to have around to find a reference pitch. Sometimes you just want to find out what key a song is in, or you want to transcribe some chords which are easy, but you don't know the starting key. You know that all you need is a reference pitch.
VAPolyQuad
Create rich, analog-style music with this powerful polyphonic synthesizer. Explore a vast array of sound-shaping tools, including multiple oscillators, filters, and effects. Program intricate melodies and rhythms with the built-in sequencer, and seamlessly share projects across your Apple devices.
- Virtual analog polyphonic synthesizer
- Up to 8 voice polyphony
- Four oscillators per voice
- Multiple resonant filters
- Built-in effects suite
- 16-bar sequencer with piano roll
- Audio Unit Extension (AUv3) support
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VAPolyQuad is a virtual analog polyphonic synthesizer for iPhone, iPad and Mac. It features 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. Single voice of the synthesizer features four oscillators, two mixers, two resonant high pass filters, two resonant low pass filters, two amplifiers, four ADSR envelopes and four LFOs. The oscillators features continuously variable wave shape and wide variety of modulation. The filters are modeled on the Sallen-Key filter circuit and cascaded OTA 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 polyphonic synthesizer. Maximum 8 voice polyphony. it depends on performance of the device it is running. Four oscillators per voice. Flexible audio signal and control signal routing. Keyboard Control Routing Two type of Lowpass filter, cascaded OTA model and Sallen-key model. Support MIDI 2.0 New 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. 370 Factory Presets - 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 price: Musical Keyboard at $0.99 against VAPolyQuad's $3.99. Musical Keyboard also leads on iOS requirement (13.0 vs 16.6). VAPolyQuad's advantage is update cadence (every 22 months vs every 50 months). On 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
Musical Keyboard costs $0.99 and VAPolyQuad $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Musical Keyboard ships an update every 50 months, VAPolyQuad every 22 months. The most recent releases landed on October 9, 2026 and October 27, 2026 respectively.
| Parameter | Musical Keyboard | VAPolyQuad |
|---|---|---|
| Price | $0.99 — better | $3.99 |
| Rating | — | 4.0 (5 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 50 months | Every 22 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Mac |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 3 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Aron Nelson | Ryo Togawa |
In-app purchases
Musical Keyboard
No in-app purchases
VAPolyQuad
No in-app purchases
Questions
Is Musical Keyboard free?
Is VAPolyQuad free?
Do Musical Keyboard or VAPolyQuad have ads?
Which is updated more often, Musical Keyboard or VAPolyQuad?
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