Comparison

VAPolyQuad vs mididelay

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

mididelay

This app applies traditional delay effects to MIDI data, allowing for complex sound manipulation. It offers multiple independent delay lines, various MIDI message processing, and customizable feedback chains with built-in effects. Organize lines sequentially or in parallel for unique sonic textures.

Highlights
  • 8 independent delay lines with feedback
  • Processes MIDI notes, CC, aftertouch, pressure, pitch bend
  • Customizable feedback modes (average, min, max)
  • Sequential and parallel delay line algorithms
  • Scale quantize, pitch, and velocity randomization
  • 3 independent scenes with cross-fading
  • Standalone and AUv3 support
Features
Read full description

mididelay is an implementation of traditional delay effect adapted for the MIDI data. It features: • 8 independent delay lines with feedback • Each delay line can process MIDI notes, control change, aftertouch, polyphonic key pressure and pitch bend messages. • For the feedback, the “feedback level” is applied to the messages; note messages change velocity and all other messages can be mixed with previous values using one of three modes (average, minimum and maximum value) • It’s possible to organise delay lines in different possible ‘algorithms’, sequentially and/or in parallel • There are three effects available inside delay’s feedback chain: scale quantise, pitch and velocity value operations randomisation • Each ‘preset’ contains 3 independent scenes marked “A”,”B” and “C”, it’s possible to cross- fade between them and adjust overall amount of the effect with 2D pad. • Simple mode : only one delay with scenes morphing. Standalone and AUv3

Screenshots

VAPolyQuad4 screens
mididelay3 screens

Verdict

The call

The clearest difference is review sentiment: mididelay at 100% against VAPolyQuad's 0%. mididelay also leads on price ($4.99 vs $14.99) and rating (5.0 vs 4.0). 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

CostPrice · In-app purchases · Ads · Monetization

VAPolyQuad costs $14.99 and mididelay $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

mididelay holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 0% of VAPolyQuad's written reviews are positive against 100% of mididelay's.

UpkeepUpdate frequency

VAPolyQuad ships an update every 22 months, mididelay every 10 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 6 level
VAPolyQuad versus mididelay: the parameters behind the verdict, then further details
ParameterVAPolyQuadmididelay
Price$14.99$4.99 — better
Rating4.0 (5 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings5 — better3
Update frequencyEvery 22 monthsEvery 10 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.615.6 — better
Further details — not scored
Size16 MB9 MB
Age rating4+4+
DeveloperRyo TogawaAlexey Nadzharov

Customer experience

VAPolyQuad

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

mididelay

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

VAPolyQuad

No in-app purchases

None

mididelay

No in-app purchases

Questions

Is VAPolyQuad free?
VAPolyQuad costs $14.99, with no in-app purchases.
Is mididelay free?
mididelay costs $4.99, with no in-app purchases.
Which has better reviews, VAPolyQuad or mididelay?
mididelay is rated higher. VAPolyQuad averages 4.0 out of 5 from 5 ratings, while mididelay averages 5.0 from 3 ratings.
Do VAPolyQuad or mididelay have ads?
Neither VAPolyQuad nor mididelay shows ads.
Which is updated more often, VAPolyQuad or mididelay?
VAPolyQuad ships an update every 22 months, and mididelay every 10 months. Most recently, VAPolyQuad was updated on September 22, 2026 and mididelay on September 9, 2026.

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