Plugin or Separate Web App?

I am relatively new to WordPress for my project and am wondering how I might go about doing this.I am creating a site for transplant patients to help them learn, socialize, etc before and after they have a transplant.

One of the functions of the site is to allow users to keep track of certain aspects of their health, such as: recording daily vital signs, monitoring food intake, keeping track of medications (and interactions). Plus, the ability to make graphs from this data and warn the user when certain values fall out of normal range.

Is this possible with the development of a WordPress plugin or will I need to develop a separate web app to do this?

https://www.transplantu.org/ I will give login credentials upon request, if needed.