Comparison

oVerlegato vs VAPolyMk4

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

Head to head
About

oVerlegato

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Concept: The app is AUv3 MIDI effect and works as “Legato” effect for MIDI instruments using pitchBend. System Requirements: 1. AUv3 host 2. 3rd-party MIDI instrument that has a functionality of pitchBend. Usage: One important calibration 1. Adjust oVerlegato’s pitchBend range to the same value as the one of destination instrument, otherwise it becomes microtonal. There are two buttons & two sliders. 1. “Legato”: it becomes legato mode only while pushing the button. 2. “Channel”: determines MIDI output channel. 3. “pitchBend range”: oVerlegato’s internal pitchBend range (from 12 to 48).” 4. “Panic!”: sends all noteOff message. When notes are accidentally stacked, push this button while pushing any key of keyboard. The rule of playing legato It needs to sustain the first initial note while pushing “Legato”button until the legato sequence ends. Scheme: oVerlegato (MIDI out) -> 3rd-party instrument

About

VAPolyMk4

This app is a powerful bi-timbral polyphonic synthesizer with advanced features like output morphing and a ring modulator. It offers extensive sound design capabilities with multiple oscillators, filters, and envelopes, and can be used standalone or as an AudioUnit Extension.

Highlights
  • Bi-timbral polyphonic synthesis
  • Output morphing and ring modulator
  • Multiple oscillators, filters, and envelopes
  • Standalone and AudioUnit Extension (AUv3) support
  • Built-in effects and piano roll sequencer
  • MIDI 2.0 and Ableton Link support
  • iCloud Drive for project sharing
Features
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VAPolyMk4 is bi-timbral polyphonic synthesizer, which features output morphing, classic ring modulator and global offset parameter control. Each synthesizer consists of three oscillators, resonant low pass and hight pass filter, amplifier, three envelope generators and two LFO. Two synthesizers can be configured as layer or split. VAPolyMk4 operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features Bi-timbral Polyphonic Synthesizer. Output morphing. Classic Ring Modulator. Global Offset Parameter Control. Three oscillators featuring hard sync and through zero FM. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Foot Pedal and Per Note Control. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Full Factory Preset: 230, Synth CH: 160, Effect: 40 Improvements Support MIDI Foot Pedal (CC#11, CC#64) Support MIDI2.0 Per Note Control Messages MIDI CC Settings are saved. It will be recovered when the app launched in the next time. UI Color can be selected from black, navy or gray. System Requirements iOS 17.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. if sound is distorted when using a device with less CPU power, reduce number of voices. 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.

Screenshots

oVerlegato2 screens
VAPolyMk44 screens

Verdict

The call

The clearest difference is update cadence: VAPolyMk4 at every 2 months against oVerlegato's every 6 months. oVerlegato's advantage is price ($2.99 vs $3.99) and iOS requirement (12.0 vs 16.6). 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

CostPrice · In-app purchases · Ads · Monetization

oVerlegato costs $2.99 and VAPolyMk4 $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

oVerlegato ships an update every 6 months, VAPolyMk4 every 2 months. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
oVerlegato versus VAPolyMk4: the parameters behind the verdict, then further details
ParameteroVerlegatoVAPolyMk4
Price$2.99 — better$3.99
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better16.6
Further details — not scored
Size9 MB20 MB
Age rating4+4+
DeveloperSatoshi KajiiRyo Togawa

In-app purchases

None

oVerlegato

No in-app purchases

None

VAPolyMk4

No in-app purchases

Questions

Is oVerlegato free?
oVerlegato costs $2.99, with no in-app purchases.
Is VAPolyMk4 free?
VAPolyMk4 costs $3.99, with no in-app purchases.
Do oVerlegato or VAPolyMk4 have ads?
Neither oVerlegato nor VAPolyMk4 shows ads.
Which is updated more often, oVerlegato or VAPolyMk4?
oVerlegato ships an update every 6 months, and VAPolyMk4 every 2 months. Most recently, oVerlegato was updated on October 28, 2026 and VAPolyMk4 on October 26, 2026.

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