IOS7. Do I have to re-download apps?

Hi everyone I've just installed ios7 for my iPhone but afterwards all my apps have disappeared, can I get them back by plugging my phone into iTunes? Or do I have to re-download them all individually?

Any help would be greatly appreciated.

Happened to me too, I guess do what you said and see if it works.

You can re-download them via the itunes store. Just download them all and go to sleep, they should be ready for me.

But for me, all of mine were still there

You probably have to redone load them. At least you don't have to pay for them again.

Either way would work.