Tom, I am not sure you realise how vital chromatic harmonization is for this app. It is like you’ve made a beautiful and fast car that can’t make left turns. As someone who improvises and constantly changes keys, it is generally impractical to have my pitch shift values change based on the key. I like that diatonic harmonization is an option, but I never imagined when I purchased the app that this functionality could not be turned off. If you need to design another app, perhaps a QVox2 to accomplish this, I would not mind purchasing that separately. I need this functionality and I need it for iOS. Everything else about the app is excellent.
