I downloaded and install an app online. I can see the icon in lanuchpad but there is no icon in Application folder. And there is no way to delete the ap. What I should to do to fix this?
This is because the app has not been completely uninstalled from Mac,i don't know what app it is, but it's a very common problem, some apps are like a virus after installation, you can't get rid of.
As for what to do and how to uninstall some app on Mac?Please check out these tutorials.