What’s New

Version 2.2

• NEW FEATURE: Addition of different views for portrait and landscape mode (iPhone/iPad)
• NEW FEATURE: Dynamic resizing according to the size provided by the host

Hey, I'm Fred developer of FAC. We share the same passion: MUSIC. A wonderful universal language and an amazing source of happiness.

FAC is a one person business, and as you may guess designing such apps is a very long process. Want to support? Please rate and review Fac Envolver, and check out my other apps. You are my motivation, and as I’ve already tweeted, your support provides me an instant coding nitro boost. So the more you give the more you receive.

Ratings and Reviews

5.0 out of 5
18 Ratings

18 Ratings

Oceans in space ,

A new midi guitar method for me

Ok so this is insane, or a new trick perhaps. When you pick a scale and the random notes and get the input settings optimal it’s perfect. So although you don’t pick the notes while playing, your rhythm is dead on and well it’s sweet if you get it. Hard to explain but I love it. I guess like a vocoder sorta setting is what I’m explaining I’m not sure

Henry Lowengard ,

Very useful!

Envolver is the envelope follower you need to dynamically drive effects directly from sound! The inverse envelope is great for ducking other channels if you have a midi controllable mixer. The two separate followers mean you can do some very controlled mixing! I hope there’s more in the future ... like adding a pitch detector to plonk external midi notes, but this is plenty of goodness!

Gremtox ,

Fabulous and unique plugin!

Now with added audio features, it’s a must-have for sidechaining and gating effects. Unlike any other plugin on iOS


Frederic Corvest
35.1 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
©2017-2019 FAC Fred Anton Corvest


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like