From the youtube comments:
Everyone who lives outside of the US and can’t get this app, there is a way you can get this.
- Open iTunes Store and make sure you’re not logged in.
- Go to the bottom of the page, click “Change Country” and then change it to US.
- Find the Bing app and try to download it.
- Click “Create New Account”.
- Do the basic sign-up steps but select “None” from the payment selection and a US address (Any address works, I did it with 1 Infinite Loop)