How do I close an open app?

[AC Question]

how do i close an open ap

android 2.3.5

 

[B. Diddy]

Re: how do i close an open ap

Welcome to Android Central! Unless the app is misbehaving and affecting system performance, don't bother--it's not how Android works. See these guides:
http://forums.androidcentral.com/ambassador-guides-tips-how-s/380592-guide-ram-android.html
RAM: What it is, how it's used, and why you shouldn't care | Android Central

If the app is impacting performance, then go to Settings>Apps​, select the app, and tap Force Stop.