Is there an app for Apple TV

Hello,

If you have an iPhone or iPad you can use a Control Center remote to control your Apple TV.

Set up the Apple TV Remote on your iPhone or iPad - Apple Support

"Set up the Apple TV Remote in Control Center

1. Open Control Center:

• • On iPhone X or later or iPad with the latest version of iPadOS: Swipe down from the upper-right corner of the screen.
  • On iPhone 8 or earlier or iOS 11 or earlier: Swipe up from the bottom edge of the screen.

1. Tap the Apple TV Remote.
2. Tap your Apple TV or smart TV from the list.
3. When asked, follow the onscreen instructions to enter a four-digit passcode into your iPhone or iPad. If you have Apple TV (3rd generation), use your Siri Remote or Apple TV Remote to enter the four-digit passcode into your Apple TV. 

The Volume button on your Apple TV Remote in Control Center works only when your Apple TV is set up with a HomePod, soundbar, or other AirPlay 2-compatible speakers. If the Volume button is dimmed, use the volume button on the remote that came with your television."

I hope this helps.

What is your model Apple TV? Identify your Apple TV model - Apple Support

Set up the Apple TV Remote on your iPhone, iPad, or iPod touch - Apple Support

The Apple TV (4th generation or later) should be straight-forward to pair with, as described, if both devices are already on the same home network. Else you will need a functional remote to set up the network first.

The Apple TV (3rd generation) needs a functional remote to set up the Apple TV Remote widget in Control Center.

For the Apple TV (3rd generation), your options are:

• buy a replacement Apple Remote (aluminum);
• temporarily borrow an Apple Remote (aluminum) to help set up the software remote;
• restore the Apple TV and connect a wireless keyboard to help set up the software remote;
• restore the Apple TV and connect the CiderTV Mac app to help set up the software remote.

The Apple TV (2nd generation) is not compatible with the Apple TV Remote widget in Control Center.

For the Apple TV (2nd generation), your option is:

• buy a replacement Apple Remote (aluminum).

If you lost the remote for your Apple TV - Apple Support