This was the first app I've ever donated for. Easy to use, and makes tagging my Apple TV movies so quick and easy. There used to be a bug where certain movies would vanish after using MetaX if you didn't have the "safe" option checked, but now it will just give you an error message if that was going to happen, instead of deleting.

Also, the developer is constantly updating this app. I've actually submitted a bug, and had the developer email me back within an hour, and the bug was fixed that day. I'm sure he can't do that every time, but it is still very impressive. On average, there are probably two updates a week with new features and bug fixes.