Q: how to delete apps from both computer and iphone

Hello yrgalpalal

If you are trying to delete anything that was purchased from the iTunes or App Store, then check out the article below to walk you through deleting content from your iPhone and your computer. To do it from your iPhone, tap and hold on an app and the apps will start to jiggle and you will see and x that you will need to tap to delete. For your computer, just select the app in iTunes and hit the delete key on your keyboard. 

How to delete content you've downloaded from the iTunes Store, App Store, iBooks Store, or Mac App Store

http://support.apple.com/kb/HT5772

Regards,

-Norm G.