Random public service announcement: What’s on TV?, an iPhone/iPod Touch TV listings app, is free today. It usually only costs 99 cents, but every penny counts in this global economic climate, right?! Apparently the discount applies today only, so if you want it, go and nab it.

The app, which is made by Napkin Studio, helps mobile users see what will be on when they get home, and offers custom channel lists and multiple location support.

Reader Jon tells us, “I’m a little bummed that it’s free since I paid for it last week. Been using it every day. Very handy, doesn’t crash. It’s on my home screen, love it!”