The Weather Channel is undoubtedly the “best comprehensive weather app on the market,” at least in its iPhone version (the Android version is balky). Rival AccuWeather, by contrast, “has put out a rather bland app,” distinguished mostly by the fact that its forecasts extend out 14 days.
Weather+ is “a model of efficiency.” It displays all the basic weather information you’d want on a single screen. (iPhone only)
Outside is “the most fun-to-use app” of the bunch. Though it basically just provides a cartoon depiction of the weather outside your window, it gets points for looking good. (iPhone only)
Weather Radar is a bit slow with downloads, but the wait is worth it. This app provides the most comprehensive radar information available: “It covers the entire globe.” (iPhone only)