My toes are tingly, my head kinda hurts, and last night's a bit fuzzy. Did I have a seizure? Is it lupus? Where's my iPad? The WebMD app will help me figure it out - Oh God! It's Sjögren's syndrome!
I'm not sure how accurate the diagnosis you'll get from the WebMD app might be, but it's certainly a decent reference. There are symptom descriptions, drug and treatment information, local health listings and a great section of first-aid pointers.
While not a substitute for a visit to your doctor, the WebMD app is clean, well organised and easy to navigate - actually, I think it's even easier to navigate than the regular WebMD website.
The app's free and available through iTunes right now. [iTunes]