I found a free universal TV remote app for iOS and Android that doesn’t spam ads

This free TV remote app for iOS and Android offers volume controls, a D-pad, touchpad, keyboard input, voice control, and screen mirroring.
Techno-Science.net

This Is the Only Bluetooth Remote App Your Need if You Have a Smart TV

Bluetooth Remote (or BT Remote) turns your phone into a true smart TV remote using Bluetooth HID, so no Wi-Fi or TV app is needed. It works like a keyboard and mouse, offers an air mouse and full ...
Gizmodo

iPhone Remote App Now Supports Apple TV Controlling With Gestures

The iPhone 3.0 version of the Remote app now supports Apple TV controls with gesturing, which should give you a lot more flexibility than the standard little Apple Remote you already have. Techcrunch ...
MacStories

Razer Launches PC Remote Play for Streaming PC Games to the iPhone, iPad, and Other Devices

Yesterday, Brendon and I wandered into a ballroom where Razer was showing off its latest hardware. We weren’t expecting much beyond super-powerful gaming laptops ( ) and lots of RGB lights (also ).