Comparison

VAPolyMT vs shortReverse II

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

Head to head
About

VAPolyMT

This powerful synthesizer app offers bi-timbral polyphony with analog-style sequencers and assignable macro controls. It functions as a standalone application or an AudioUnit Extension, supporting MIDI, Ableton Link, and audio export. Project files are savable via iCloud Drive for cross-platform access.

Highlights
  • Bi-timbral polyphonic synthesizer
  • Analog-style step sequencer per timbre
  • Assignable macro controls
  • AudioUnit Extension (AUv3) support
  • Ableton Link and MIDI support
  • iCloud Drive project sharing
  • Built-in effects and piano roll editor
Features
Read full description

VAPolyMT is a bi-timbral polyphonic synthesizer for iPhone, iPad and Mac. It features analog style step sequencer per timbre and assignable macro controls. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export. Each synthesizer consists of two oscillators, mixer, resonant low pass filter, resonant hight pass filter and amplifier. The synthesizers can be layered or can be split. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. VAPolyMT also includes sequencer which features piano roll editor and parameter automation. 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 subtractive synthesizer. Analog Style Step Sequencer per timbre. Eight Assignable Controllers. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Foot Pedal and Per Note Control. 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. Include more than 200 Factory Presets. 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. System Requirements iOS 17.0 or later macOS 14.0 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.

About

shortReverse II

Read full description

Concept: “shortReverse II” is the advanced version of “shortReverse” which was previously released. The second has the same functionality as the first but resolves professional needs, that is, the problem of restricted buffer size (2^N). Now the user can freely adjust the buffer size from 256 to 65536 (in 1 sample unit). Usage: The user can reverse an incoming audio signal in real-time only while pushing the button. "buffer size" slider is text-editable by clicking. Note: Button automation in DAW is not supported. System Requirements: AUv3 host stereo output: just plug headphone/mic or audio interface.

Screenshots

VAPolyMT4 screens
shortReverse II2 screens

Verdict

The call

The clearest difference is price: shortReverse II at $3.99 against VAPolyMT's $14.99. shortReverse II also leads on update cadence (every 2 days vs every 11 months) 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

VAPolyMT costs $14.99 and shortReverse II $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

VAPolyMT ships an update every 11 months, shortReverse II every 2 days. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 6 level
VAPolyMT versus shortReverse II: the parameters behind the verdict, then further details
ParameterVAPolyMTshortReverse II
Price$14.99$3.99 — better
Rating5.0 (4 ratings) — better—
Number of ratings4 — better—
Update frequencyEvery 11 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS16.612.0 — better
Further details — not scored
Size18 MB14 MB
Age rating4+4+
DeveloperRyo TogawaSatoshi Kajii

In-app purchases

None

VAPolyMT

No in-app purchases

None

shortReverse II

No in-app purchases

Questions

Is VAPolyMT free?
VAPolyMT costs $14.99, with no in-app purchases.
Is shortReverse II free?
shortReverse II costs $3.99, with no in-app purchases.
Do VAPolyMT or shortReverse II have ads?
Neither VAPolyMT nor shortReverse II shows ads.
Which is updated more often, VAPolyMT or shortReverse II?
VAPolyMT ships an update every 11 months, and shortReverse II every 2 days. Most recently, VAPolyMT was updated on October 7, 2026 and shortReverse II on October 8, 2026.

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