We have a Vizio, (liked it because it wasn't some roku or Amazon Fire box) after a few months the quality of the set started going downhill (remote updates don't ya love em) we had been enjoying the their built-in free play channel WatchFree was nice and simple interface compared to Pluto.TV and didn't overwhelm the TVs little processor... but soon they got greedy and made WatchFree+ which likely pushed more data gathering or advertising, had a lousier UI, stored too much on favorites for my TV's processor to remember, and chewed up more bandwidth with massive preview images. For about a year or so they (Vizio)kept on trying to switch users from WatchFree to WatchFree+ (changed default watchfree button to watchfree+, re-positioned in the apps menu, etc.) They finally deleted Watchfree entirely. Which promoted my to switch to PlutoTV streaming as WatchFree+ is just unusable.
Recently about a year ago they pushed another update that changed the TV's "tuner" option into the WatchFree+ app (now you can't just show whats on ch3 but now it filters it through the WatchFree+ app player with boxed 4:3 aspect ratio. and who knows what else)
Who knows what Wal-Mart will do to it to recoup their investment..