variStretch vs VAPolyTS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
variStretch
This app allows real-time audio speed manipulation without altering pitch. It offers three distinct playback modes and adjustable buffer settings for precise control over sound processing.
- Real-time speed adjustment (0.5-2.0x)
- Tape mode (speed & pitch change)
- Phase Vocoder mode (speed only)
- Adjustable buffer size
- Buffer clear function
- AUv3 host compatibility
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Concept: The app is a so-called time-stretch machine. The user can change the speed (0.5-2.0) of audio source in real-time using keyboard or slider at will. Usage: There are three play modes: 1) Tape (to change the both speed & pitch) 2) Phase Vocoder (to change the speed alone) 3) Thru (no processing) "Buffer Size" slider determines how long the data will be stored. "Buffer Clear" button will reset the buffer to be zero. System Requirements: AUv3 host
VAPolyTS
Create iconic electronic music sounds with this polyphonic synthesizer. It offers advanced oscillator stacks, a step sequencer, and built-in effects for crafting Trance, House, and Techno. Seamlessly share projects across iPhone, iPad, and Mac via iCloud.
- Polyphonic subtractive synthesizer
- Stack oscillators with detuned and octave-shifted outputs
- Analog style step sequencer with piano roll editor
- Built-in delay, chorus, flanger, reverb, EQ, and compressor
- Audio Unit Extension (AUv3) and Ableton Link support
- MIDI 2.0 and Bluetooth MIDI compatibility
- iCloud Drive project sharing across Apple devices
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VAPolyTS is polyphonic synthesizer for iPhone, iPad and Mac. It is inspired by the synthesizers which contributed to shape iconic sounds of Trance, House and Techno Music in 1990’s. It operates as a stand alone or as an AudioUnit Extension (AUv3). Stand Alone supports Ableton Link, MIDI and audio file export. The synthesizer features two stack oscillators. The one of them can generate mix of detuned seven oscillator outputs. The other one can generate mix of several octave shifted oscillator outputs. It also features a mixer, a resonant low pass filter, a resonant hight pass filter, an amplifier, two envelope generators, two LFO and analog style step sequencer. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. VAPolyTS 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 Polyphonic subtractive synthesizer. Stack oscillator which can generate mix of seven detuned oscillator outputs. Stack oscillator which can generate mix of several octave shifted oscillator outputs. Analog Style Step Sequencer. Eight Assignable Controllers. 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. Include 256 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 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
Verdict
The clearest difference is iOS requirement: variStretch at 12.0 against VAPolyTS's 16.6. On price, rating, ratings volume and update cadence 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
variStretch costs $5.99 and VAPolyTS $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for variStretch against 5.0 for VAPolyTS. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
variStretch ships an update every 7 months, VAPolyTS every 10 months. The most recent releases landed on September 6, 2026 and September 13, 2026 respectively.
| Parameter | variStretch | VAPolyTS |
|---|---|---|
| Price | $5.99 | $5.99 |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 7 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 15 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Satoshi Kajii | Ryo Togawa |
Customer experience
variStretch
VAPolyTS
In-app purchases
variStretch
No in-app purchases
VAPolyTS
No in-app purchases
Questions
Is variStretch free?
Is VAPolyTS free?
Which has better reviews, variStretch or VAPolyTS?
Do variStretch or VAPolyTS have ads?
Which is updated more often, variStretch or VAPolyTS?
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