4 stars: A few minor small bugs here and there, most notable when viewing on mobile, if you leave the app and have it playing in a pop-up window, then go back to the app, you have to restart the app to have access to any resolution higher that 360p. Other than annoying ads sometimes it's great and I've enjoyed many, many hours of content and interaction on Twitch!
4 stars: The app has been quite helpful throughout the years I have used it. I don't think I have had too many issues, I mean maybe sometimes it won't count how many viewers I have at certain times. Like maybe it will count 1 viewer, when I have like 2-4 viewers, and other times it counts all my viewers. Other then that and maybe a few minor bugs, but surprisingly still an awesome app!
3 stars: On mobile the app is fine, but I also have a Chromecast with Google TV device, and the latest update of Twitch on that is disappointedly subpar. Any game category I'm following no longer has the option of seeing previous Vod streams, or clips. I can't go to my own channel to watch anything, just the option to sign in/out. Not sure why it was changed to less viewing options, because the previous build was fine.
2 stars: Ads. The ones that are just a bar on the left hand side are fine, those don't interrupt the stream. The 5 or 6 videos that take 2-3 minutes every 10 minutes are the ones that bother me. Just infuriating when you're watching a streamer do something and then those long ad breaks prevent me from seeing...