Published May 12, 2026, 10:00 AM EDT Pankil is a Civil Engineer turned freelance writer from Ahmedabad, India. As a long-time Windows and Android user, he has extensive knowledge of both operating systems and specializes in creating how-tos and troubleshooting guides.    Pankil has been writing about Windows, Android, and iOS since 2021. He has written over 1200 articles across reputable publications like MakeUseOf, GuidingTech , and TechWiser .   Outside of his writing endeavors, Pankil is an avid football fan and loves to plan his international travels with his wife in his free time. Closing an app on your PC is a simple thing, right? Click the X icon, and it’s gone. It’s something we have all done for years. But the thing is, clicking the X icon often only closes the window, not the app itself. That means it continues to use system resources in the background, which usually affects whatever you’re actually doing. It's simple.…