# VAPolyQuad — Polyphonic Synthesizer > Virtual analog polyphonic synthesizer with 8 voices, effects, and sequencer. (iPhone/iPad app by Ryo Togawa.) - Source: https://appshunter.io/ios/app/vapolyquad/id6504518079 (this page in markdown: same URL + `.md`) - Developer: [Ryo Togawa](https://appshunter.io/developer/1474193056) - Category: Music - Price: $14.99 - Rating: 4.00/5 from 5 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 16.6 · 16 MB - Languages: American English - Released: 2024-06-19 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/vapolyquad/id6504518079/reviews.md ## What is VAPolyQuad? 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. ## Key features - 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 ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/vapolyquad/id6504518079/reviews.md ### 2/5 — Crash City… *2024-09-23* I like the app, but it crashes every time I open it as a stand-alone app. -I haven’t observed it in a program like AUM yet. ## Frequently asked questions about VAPolyQuad ### What is VAPolyQuad? VAPolyQuad is a virtual analog polyphonic synthesizer designed for iPhone, iPad, and Mac. It offers advanced sound design capabilities with multiple oscillators, filters, effects, and a built-in sequencer. ### What devices does VAPolyQuad support? VAPolyQuad is available for Mac, iPhone, and iPad. It requires an A13 Fusion chip or above for optimal performance, especially when using the AudioUnit Extension. ### How much does VAPolyQuad cost? VAPolyQuad is a paid application, available for a one-time purchase of $5.99. There are no in-app purchases or subscriptions required. ### Does VAPolyQuad have ads? No, VAPolyQuad does not contain advertisements. As a paid application, it offers an uninterrupted user experience. ### Can I use VAPolyQuad with other music apps? Yes, VAPolyQuad supports AudioUnit Extension (AUv3), allowing it to be used within compatible host applications like Apple Logic and GarageBand on iOS and macOS. ### How often is VAPolyQuad updated? The latest version of VAPolyQuad is 1.0.1, last updated on March 27, 2026. While this indicates a recent update, future update frequency is not specified. ### What are the sound design capabilities of VAPolyQuad? Each voice in VAPolyQuad features four oscillators with continuously variable waveforms, two resonant high-pass filters, two resonant low-pass filters, and extensive modulation options. ### What is the age rating for VAPolyQuad? VAPolyQuad has an age rating of 4+, making it suitable for a wide range of users interested in music creation. ## Version history (last 2 releases) ### 1.0.1 — 2026-03-27 Version 1.0.1 contains improvements and bug fixes. - Fixed a problem that UI freezes on some devices with older cpu. - Fixed a problem that notes hung when gestures are cancelled. - Fixed a problem that calling all note off reduces available number of voices in some condition. - Fixed a problem that turn Hold Button off on Keyboard doesn’t turn off playing notes in some condition. - Added an ability to restore MIDI CC Map. - Added a voice count option in setting panel to adjust number of voices. - Fixed a problem of midi note input monitoring. - Fixed a problem that text color and background color of text input field displayed as white in some circumstances. ### 1.0 — 2024-06-19 No release notes. ## Apps similar to VAPolyQuad | App | Rating | Price | Category | | --- | --- | --- | --- | | [synthQ](https://appshunter.io/ios/app/synthq/id950094378) | 4.2 (13) | $5.99 | Music | | [TB DualVCF](https://appshunter.io/ios/app/tb-dualvcf/id1505169270) | 4.9 (18) | $4.99 | Music | | [MultitrackStudio for iPad](https://appshunter.io/ios/app/multitrackstudio-for-ipad/id776998585) | 4.4 (29) | $29.99 | Music | | [QuantiChord](https://appshunter.io/ios/app/quantichord/id1439713799) | 4.0 (11) | $12.99 | Music | | [Agonizer](https://appshunter.io/ios/app/agonizer/id1499426175) | 4.8 (203) | $7.99 | Music | | [StepPolyArp](https://appshunter.io/ios/app/steppolyarp/id1361313588) | 4.8 (48) | $19.99 | Music | ## More apps by Ryo Togawa - [VADrumSM](https://appshunter.io/ios/app/vadrumsm/id1474193057) - [ChannelEqualizer](https://appshunter.io/ios/app/channelequalizer/id1513527511) - [ChStrip](https://appshunter.io/ios/app/chstrip/id1518510831) - [TfxEcho](https://appshunter.io/ios/app/tfxecho/id1523777426) - [TfxMod](https://appshunter.io/ios/app/tfxmod/id1524639578) - [TfxReverb](https://appshunter.io/ios/app/tfxreverb/id1529840178) All apps by Ryo Togawa: https://appshunter.io/developer/1474193056 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*