How much is the subscription to Apple TV.

You are referring to Apple TV, that service is free. However if you are referring to Apple TV + (note the + symbol) that is 4.99/mo. or you can buy an annual subscription for $49.99/yr. which means 2 free months. If you are unsure of the difference between what Apple TV and Apple TV+ are please read the info below:

Apple TV+ is $4.99 per month, everything else in the Apple TV app are additional charges. If you are unclear on what the difference is between Apple TV+ and what the Apple TV app is it's pretty simple.

• The Apple TV app is simply a single place to buy content, including Apple TV+ content, Showtime, CBS, and lots of other content. 
• Apple TV + is Apple's own proprietary content, currently it is a small library of content which is why it is inexpensive. The good news is the library is constantly growing and adding some pretty good content!

If you are still confused please visit www.apple.com/tv and look over Apple's TV offerings which include:

• Apple TV HD (hardware)
• Apple TV 4K (hardware)
• Apple TV app (as described above)
• Apple TV + (as described above)
• AirPlay
• Accessories

The Apple TV+ subscription service is $4.99/£4.99 per month after a 7 day free trial, or free for three months when you buy an eligible device such as the Apple TV streaming box. Note that Apple TV+ contains only original shows and films produced by Apple: other streaming services are separate.