Couldn’t uninstall at first

I downloaded the app because I was looking for a snippit like on windows. This app was not what I needed and when i tried to drag it to the trash it wouldn’t let me stating that the app plug-ins were in use. I checked out the website only to find a cumbersome trouble shooting forum and no contacts for technical support other than the prolonged email dialogue. I just wanted to get this app off of my machine. I ended up unpacking the contents and throwing them in the trash individually and once that was done, I was able to delete the icon. I’m now suspicious and wonder if this app is malware.

Apps2Use about Skitch - Snap. Mark up. Share., v2.7.8