Good engine but needs update

Its a very simple but very complete tool. A great auto tune with harmonizer and other effects but its a kind of buggy on ios7. Even on iPhone 5.
Plus screen size is not adapted for iPhone 5.
There are some random "pop".
So very good and complete but need a serious update to fix those littles very annoying bugs

Strazerj about ImproVox, v2.26.7644