How and Why to Develop a Mobile Healthcare App[1]

Registration and subscription fees

Yes, you read that right! While offering an app free of charge is the best option, registration and subscription fees are still one of the most common ways of making money from apps. Let’s say you are building a platform that connects physicians to patients (aka patients schedule appointments with doctors). In this case, you can charge doctors (not patients) a monthly fee and let them get registered to connect with patients. 
On the other hand, if you really want users to pay for your app, you can offer patients free access to all features for a fixed time. After a free trial ends, users will need to choose their subscription plan and make monthly payments.