Different people have different requirements for weather news, so the perfect weather app for any given person might not fit someone else that well. Because of this, to be sure that you have the best weather app for you, you’ve really got to put in some legwork on your own. That said, I can tell you why I find the Weather Channel’s app to be really good.
When I’m browsing online for weather information, my go-to site is usually weather.com, which is run by the same folks that made this app. Like on their website, with this app, essentially any weather information I need, including (importantly) precipitation and temperature likelihood for the next ten days is just a couple of clicks away.
Perhaps the best feature is the weather map which has the Doppler radar area overlaid on a map of the area. If it’s raining, by looking at the map you can see if you got hit by some scattered showers or if you’re in the middle of a massive storm. There’s also an “animate past” feature on the weather map, which shows the movement of the radar over the last few minutes (which should show you in which direction a storm is headed). This feature does seem to work (especially if the storm is a fast-moving one), but the movements are rather jerky and not that pleasant. (I’ve seen better online, but this is mobile.)