In either the iPad or iPhone?
I ask because I have this Weber barbecue app on my iPad. In the recipes, when a cooking time is given you can tap it and start a timer. I just tried to start a second and it said I would have to cancel the first. I'm wondering if that's a limit of the app or of the iPad/iPhone.
BTW, I read a review on the iTunes store that mentioned that if you want the same app for both devices you have to pay the $5 for each one. This is unusual isn't it? I've ran across several apps that if you buy it for one device, you'e bought it for both with the one purchase.