Easy Task Killer

No configuration required and NO ADS!
Just launch and kill the task You don't want anymore.
There's a donation page (slide menu from left to right or just click the icon on the upper left corner of the app) just if You want to say thanks.
PLEASE NOTE THAT IN-APP PRODUCTS ARE ONLY FOR PEOPLE THAT WOULD LIKE TO DONATE. THERE ARE NOT BUTTONS OR STUFF THAT ASK YOU FOR MONEY UNLESS YOU GO THE THE DONATE PAGE WITH THE "DONATE" MENU.
Task Killer is a "task manager" like application.