To create an Apple TV app, you have three options. 
Step 1, you can build a custom-built, fully white-labeled app from a leading tvOS provider like VPlayed. It comes with a one-time payment for the tvOS app, but has no recurring payments. 
Step 2, you can lease an app from a third-party provider and customize it with your branding and content. It comes with recurring payments and user fees.
Step 3, you can use the DIY method by using Apple's tvOS development tools and resources to build the app yourself. But, choose this method, if you have the necessary coding skills and knowledge.

Launching a tvOS app for Apple TV gives numerous benefits. They are: 
1. It expands your app's reach to a wider audience. 
2. Allows for seamless integration with other Apple devices and services provides a cohesive user experience. 
3. High-quality content support ensures an immersive viewing experience. 
4. Access to the Apple TV App Store boosts app visibility. 
5. Innovative features like Siri voice control enhance user interaction. 
6. Monetization options and regular platform updates offer revenue opportunities and continued innovation.

Yes, it is a streaming platform that allows you to watch movies and TV shows on your devices.

Apple has its own app that’s included in most Apple devices. You can also add the Apple TV app by going to your TV’s applications marketplace and downloading it for free.