Hi,
I'm a professional API developer for many years and can do your task with the best quality and using latest code standards and practices.
Just to confirm that you know:
1. to connect to betfair api we need the API key; I assume that you have it
2. we should be smart about autorefresh: API counts the amount of information requested and after we exceed certain amount, it will return too_much_data error.
But your description is not good enough to understand the scope of work. Could you, please, provide an example of what information you are looking for. Just an example. Let's assume the application is created, so you can get what you want. You pressed the button and... What result would you like to see?
Regards,
Eugene