Until recently I was using an inexpensive Android tablet, and I had to deal with some apps that would auto-start and then run in the background all,of the time. The Weather Channel app was a particularly bad offender.
Now I have an iPad 3 where it seems harder to know what is going on behind the scenes. I am interested in the Weather Channel app if it will not be detrimental to the iPad's performance. But how can I be sure?