synthQ vs VAPolyQuad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
synthQ
This music creation tool for iPad offers a unique module queuing system and a customizable interface for dynamic sound design. Create complex sounds with virtual cables, a resizable keyboard, and a wide array of modules for production, performance, and education.
- Customizable module queuing system
- Virtual cable-based modulation
- Resizable multi-octave keyboard
- Extensive module library (oscillators, envelopes, filters, FX)
- Ableton Link support
- MIDI input/output
- Preset sharing and import
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Introducing the queuing synthesizer for iPad. SynthQ has been designed from the ground up with the touchscreen interface in mind. SynthQ is a subtractive synthesizer with a customizable interface. A unique module queuing system, resizable multi-octave keyboard, and intuitive cable-based modulation controls offer a truly dynamic music-making experience for iOS. Each part of the synth is separated into units called modules. Each module snaps into place along a scrollable surface above the keyboard. Control the number of modules shown on the screen at any time. Control which modules appear for each sound. Tap a button on the module menu to launch a module and add it to the queue. Drag a module up and release to remove it from the queue. Drag a module down to move it within the queue. Add variability to your sound by connecting different modules using virtual cables. Alter the sound with synthQ's movable keys. SynthQ provides an intuitive and engaging way to get started creating your own sounds, and is ideal for production, performance and music education environments. Full feature list: MODULES: —three oscillators — sine, triangle, saw, square, pulse and resonant noise waves —three adsrs — amp, filter and modulation envelopes —filter with lowpass, hipass, bandpass, band-reject and peak filter modes —glide —frequency modulation oscillator —ring modulation oscillator —eight modulation bays with virtual cables enable interactions between modules —three tempo-syncable LFOs with sine, triangle, saw, reverse saw, square, random curve and random step waves —two XY matrix pads —XY keys module turns the keyboard's movable keys into modulation sources —sequencer module with Ableton Link support and built-in arpeggiator mode —vocoder using microphone or Inter-App Audio Effect input —two FX slots with chorus, flanger, phaser, reverb, tremolo, distortion, delay and bitcrush —analog simulation with soft clipping and random pitch wavering —midi module with pitch bender, modwheel and velocity —master volume control INTERFACE: —multi-octave resizable keyboard with 10-voice polyphonic, monophonic and legato modes —optional "sticky keys" mode locks each key to your finger after being pressed —when used as a modulation source, sound can be altered by moving the keys in different directions —unique rearrangeable module queuing area defines which controls are present per preset —fully featured preset menu system with options to share and import via e-mail or iTunes File Sharing —import presets directly from iOS mail by tapping and holding the attachment and pressing "Open in synthQ" —functional graphic design and layout eliminates screen switching by keeping the control modules and keyboard in constant view OTHER FEATURES: —Audiobus 3 support with Inter-App Audio —A=432Hz, A=440Hz and A=444Hz tuning modes —44100k Hz, 32000 Hz and 22050 Hz sampling rate modes —MIDI input and output per channel —basic recording feature to save, play, loop, and share recordings —import .WAV files from iTunes File Sharing for playback —parallax motion effects Follow @synthQ on Twitter for latest announcements and free preset packs, updated regularly! Share your presets with the developer for a chance to get them added to an official update!
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 review sentiment: synthQ at 80% against VAPolyQuad's 0%. synthQ also leads on price ($5.99 vs $14.99) and update cadence (every 3 months vs every 22 months). VAPolyQuad's advantage is device support (3 vs 1). On ratings volume, ads, in-app purchases and monetization model 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
synthQ costs $5.99 and VAPolyQuad $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
synthQ holds the better App Store score, 4.2 against 4.0. Both are backed by a comparable volume of ratings — 13 and 5 respectively. Written reviews point the same way: 80% of synthQ's written reviews are positive against 0% of VAPolyQuad's.
synthQ ships an update every 3 months, VAPolyQuad every 22 months. The most recent releases landed on June 1, 2026 and September 22, 2026 respectively.
| Parameter | synthQ | VAPolyQuad |
|---|---|---|
| Price | $5.99 — better | $14.99 |
| Rating | 4.2 (13 ratings) — better | 4.0 (5 ratings) |
| Positive reviews | 80.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 13 — better | 5 |
| Update frequency | Every 3 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, Mac — better |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 78 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Chris Niven | Ryo Togawa |
Customer experience
synthQ
VAPolyQuad
In-app purchases
synthQ
No in-app purchases
VAPolyQuad
No in-app purchases









