About this app
Kuvert allows you to draw five different envelopes. These envelopes control different effect parameters, and can be drawn freely or onto a grid. The envelopes are looped, while the incoming audio isn’t (unless you’re feeding it looped material of course). This is a powerful & fun way of altering your sounds to a whole new level, sometimes not even recognizable! Thanks to the looping nature of the plug-in, it will fit very well into any musical context. One way of using it would be to revitalize any looped material within a few seconds. Noteworthy features: • Volume envelope • Low cut filter envelope (with resonance) • High cut filter envelope (with resonance) • "Glitch" envelope (alters timing) • Delay send envelope (with tempo synchronised time, filter and feedback • IAA (With tempo sync if host sends it) • MIDI clock sync • Load / Save presets • Audiobus • Documentation (on the product web page) Check out the product web page for a video demo. Feedback or suggestions? Drop us a mail: support(at)klevgrand.se or @klevgrand on Twitter
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 21, 2026 · 9:24 AM $9.99
Screenshots
