I like your design, but I think you need some copy on privacy and data security. For physician access, how do you handle HIPAA compliance? It would be good to mention this on the front page, at least under the "For Physicians" section.
This is super similar to a (now defunct) SMS-based medication reminder application called GetMinders. I have confidence that this type of service could be useful, but I think taking medication is one (small) part of a larger problem of comprehensive medical treatment management. I'd really like to see someone tackle patient/doctor relationships in a project management type of tool. This would be better served as a piece of that larger platform.
Hey guys,<p>My friend and I built this over the last couple of months and have been having a ton of fun testing this out with some elderly users! Feel free to drop us a line at founders@nightingaleapp.com<p>Thanks!