I want a extension for my health app that will show stats graph based on user's input

I am a app developer from India and I want an extension to make my own health app. I am making something like this user can input there weight, height, BP, etc. Etc. And I want an extension with can easily make an interactive graph based on users’ inputed data like some smartwatch pairing app does. Like the fitness and smartwatch pairing app shows heart rate calories etc in graphs … I want something like that in my app. PLEASE help . I have already seen a topic same asked by another developer but none replied to it and i didn’t found any extension from that topic but pls #extensions:extension-development team help us to grow !:smiling_face_with_tear:

You should state how much you will pay for this.