WhatsApp is mainly known for its chat functionality, however it does also include video calling and document or media sharing.
This application can be used for the consultation part of your tele-medicine application to your practice. In conjunction with the remote desktop application you can conduct your testing for synchronous tele-audiology, or the test can be done with the patient during their scheduled appointment and once the health care practitioner has analysed the results, they can video call the patient to consult them and convey the information in a face-to-face forum.
"WhatsApp Business is an Android app which is free to download, and was built with the small business owner in mind. With the app, businesses can interact with customers easily by using tools to automate, sort, and quickly respond to messages. If you're a large business, learn more about the WhatsApp Business API."
"Business Profile - Create a business profile with helpful information for your customers like your address, business description, email address, and website."
"WhatsApp Voice and Video Calls: Speak Freely - With voice calls, you can talk to your friends and family for free*, even if they're in another country. And with free* video calls, you can have face-to-face conversations for when voice or text just isn't enough. WhatsApp voice and video calls use your phone's Internet connection, instead of your cell plan's voice minutes, so you don't have to worry about expensive calling charges."
"End-to-End Encryption: Security by Default - Some of your most personal moments are shared on WhatsApp, which is why we built end-to-end encryption into the latest versions of our app. When end-to-end encrypted, your messages and calls are secured so only you and the person you're communicating with can read or listen to them, and nobody in between, not even WhatsApp."
"Document Sharing Made Easy - Send PDFs, documents, spreadsheets, slideshows and more, without the hassle of email or file sharing apps. You can send documents up to 100 MB, so it's easy to get what you need over to who you want."