This would be highly subjective from user to user, but I will list my families most used apps, and some noteworthy ones to try. I won’t mention Apple’s apps like Movie, computer, or music. I separated them by type of app, and then sorted them from most used to least.
Video:
Netflix, YouTube, Hulu, Nick Jr, Plex, CW, AMC, Crunchyroll, NBC (for only BlackList), HBO, Showtime, Stars, Trailers…
There are many more video apps and Amazon Prime is coming soon (maybe?). So there really isn’t a lack of content.
Another thought, the app quality is visually pleasing, but the UI of tvOS’s apps are not nearly as good as the ATV3 when it comes to functionality and user friendliness. While the ATV3 doesn’t have all the video apps that the ATV4 and later can have, I find that I enjoy using the ATV3 version a lot more.
If you only plan on using the “basic” video apps, (Netflix, Hulu, YouTube, HBO, Showtime and others) and don’t have an interest in other apps or 4K, I would highly recommend getting the older ATV3 which is available for the fraction of the price of the newer ones.
Music:
Pandora…
Beside Apple’s options, it is the only one we use. This might change is Amazon brings their app to tvOS.
News apps:
Weather, Foxnews, CNN, WSJ….
We hardly use any of these except the weather app…
Games:
Risk, Alto’s Adventure, Crossyroad, Sonic, SongPop, Mindcraft, Real Racing, and a few others…
Most of the games are “bubble gum” games that quickly lose their flavor. There are other good ones, but they were not good enough for me to remember the names of them. This is one of the most disappointing things about tvOS, the lack of good games.
Noteworthy:
PapaJohns – it might be a little more than using a computer or phone app due to not being able to use coupons, but regular priced items are 25% off. Also, they have pizza porn, which is awesome.
Risk – This game is awesome, but after beating the AI on hard-mode on every map many times, I have taken a break from it. I wish more maps were added.
Alto’s Adventure – Very relaxing game. Play it after a long day at work.
YouTube – This is noteworthy for a bad reason, the app is so basic and barebones, it is frustrating. Why can’t they show you the channel of the video you are watching? The ATV3 version is much better.