critique of products

Your product is really well planed, the market, the presentation, the promotion and all that stuff and all that stuff are good too. The milkshake for elder people is a good idea, because they used to feel forgotten by the whole market.
That is why you can take a place in the market, maybe in the future you can create different flavors of milkshakes because people used to get bored easyli with the same flavors always. About the phone assesory with doctors I guess is too much because the people could think that is some kind of medecin or something like that.