[FreeKill]

Pi Hole is free, unless you're counting the system you have to run it off of (like a raspberry pi) but you can run it off any device you want like a virtual machine at home for instance, so you only need to buy a Raspberry Pi if that's how you intend to operate it. The benefit of it, is it blocks a lot more than just ads. For instance, it blocks any attempts to "phone home" by my smart TV or by applications I use such as Nvidia Geforce Experience. It's more extensive than browser based ad blockers because it works for your entire network, not just web browsing (for example, blocks all youtube ads on my un-rooted mobile device). It also has a huge set of customizable community maintained block lists that block everything from simple ads all the way to pornography (if that's what you want).

[FreeKill]

Here's an example of some of the community maintained lists you can use to block more things easily. https://wally3k.github.io/ Many of these are updated quite frequently as well.

[jasonkostempski]

You got it to block YouTube ads? Thats the reason I bought an rpi, but it didnt block the ads in the native YouTube app. Still works great against other inapp ads though.

[gruez]

>Pi Hole is free, unless you're counting the system you have to run it off of (like a raspberry pi) but you can run it off any device you want like a virtual machine at home for instance, so you only need to buy a Raspberry Pi if that's how you intend to operate it.

That was addressed in the parent comment under footnote [1].