I use Online Food Diary with Exercise Log and iPhone, iPad, Android, and BlackBerry Calorie Counter | MyNetDiary which works on iphone and on the computer.
It lets you edit your macro targets too (so mine is 70% fat, 10% carbs, 20% protein... which a lot of the other calorie counters won't let you do)
I know you probably don't want to track calories but you can ignore that part of it and just use it for the food database it has? There's no natural food I haven't found in there yet... and I'm always cooking from fresh as well.
Another one I use frequently is Nutrition facts, calories in food, labels, nutritional information and analysis – NutritionData.com but I have no account there, I just use it to check things every now and then