About the We Are Undefeatable app

What is the We Are Undefeatable app?
Is the app free?
Is the app suitable for me and my health condition?
Is there anyone who the app isn’t suitable for?
I keep seeing the name ‘Good Boost’. Who are Good Boost and what is their involvement?
Downloading and using the app

How can I get the app?
What devices is this app available on?
I can’t download the app – help!
Do I need internet to use this app?
Using the app
