Help me choose  company to develop an app for wearable devices

 

Hello everyone!
I'm looking for company to develop  app for wearable devices. I want the app to work with medical devices, collect health data and be user-friendly. Plus, it's important that it meets all security and data protection requirements. I'm looking at different options, but it's hard to understand who really understands the topic. Maybe someone has already encountered the development of this kind of application? Please share your experience or recommend trusted companies.