You should check for anything in your "AppData" folder containing the name of the app or it's "publisher" and delete it.
Win+R - Type '%appdata%' - Go back one directory - Then check your Local, LocalLow, and Roaming folders.
Also check your "Startup" tab in Task Manager (Ctrl+Shift+Esc) for anything suspicious.
Typically best to disable anything but system apps and drivers in Startup but, you do you of course.
It'd be smart to do all that for every "user" on your PC if you have other accounts.
If you still don't feel like your PC is secure, just reinstall Windows. Though, you should be fine for the most part.
Cheers!