variStretch
real-time time stretch
About
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.
What's New in variStretch
1.0.2
July 10, 2026
DSP performance in the section of phase vocoder is improved (less CPU-hungry).
Developer apps
FAQ
What is variStretch?
variStretch is a real-time audio time-stretch machine that allows users to change the speed of audio sources between 0.5x and 2.0x. It offers different modes for manipulating both speed and pitch, or just speed.
What are the different playback modes in variStretch?
variStretch offers three playback modes: 'Tape' which changes both speed and pitch, 'Phase Vocoder' which changes only the speed, and 'Thru' which provides no processing.
How does variStretch handle audio processing?
The app uses a 'Buffer Size' slider to determine how long audio data is stored for processing. A 'Buffer Clear' button is also available to reset the buffer.
What devices is variStretch compatible with?
variStretch is designed for iPhone, iPad, and iPod touch devices. It requires an AUv3 host to function.
What is the price of variStretch?
variStretch is a paid application, available for $5.99. There are no in-app purchases or advertisements.
Does variStretch have ads?
No, variStretch does not contain advertisements. It is a paid application with a one-time purchase price.
How often is variStretch updated?
The latest version of variStretch is 1.0.1, last updated on June 2, 2025. It was initially released on April 22, 2025.
What is the age rating for variStretch?
variStretch has an age rating of 4+, making it suitable for a wide range of users. The app focuses on audio manipulation features.
