Where to buy a device that beeps at certain times?

I'm looking for a device that beeps at very specific times with little messages like "eat" or "Pills"… I don't know if it exists, other than with iphone apps. It's not for me though, and the person it's for doesn't use an iphone…
I think i've seen it in movies but not sure what they're called?

Perhaps this can help?

http://www.epill.com/