Okay, we have client that use my smart-fridge to sell healthy food. example: https://alvo.co/ so, following the idea of nutrition, often the menu has full nutritional info breakdown we know that iOS have Health-App, and so do Android. So, in principle, after they buy, what they eat can be exported to the Health app now they can track their diet on top of tracking their physical activity What if we build a layer of service to "sell" personalized nutritionist? Say you would like to follow Keot diet. They choose a certified nutritionist that will help you in your diet. Say what you should cut down and what you should eat this service is payable (just like when you have personal trainer in gym). you take a cut from this service you can connect nutritionist to end-consumer via this platform.