Cleaner for Xcode needs permission clean files The app in the App Store called "Cleaner for Xcode" displays the following warning message after trying to "clean". I understand it has to do with permissions, but not sure how to fix it. I'm also not sure how to get any support for this app nor contact the developer. 

The error is:
"Need ~/Library/Developer permission to analyze and clean Xcode files"

I assume this means I need to give the app permissions to edit the Developer folder, but not sure how to do that.
You don't really need a separate app for cleaning Xcode files. I frequently do it manually, when the build logs are old, irrelevant. You can navigate to that ~/Library/Developer folder and remove what you don't like. Be careful not to remove UserData or you'll lose your preferences. I remove simulators because I don't need them. 


Reduce size of the Xcode application


I also set the iOS DeviceSupport folder as locked after cleaning it up, since it eats 2.5 GB for nothing. 


How to stop Xcode downloading iOS support package of my iPhone?