On my iPhone, I use the weather channel app. It not only give the current tem , it give you an hour by hour forecast, 36 hour forecast, 10 day forecast, has live radar, and you can even get a video forecast. All that and it's free.

 

I use the app thats on my Iphone4 that came with it, but its not a radar, its just a forcast. I personally like to look at the radar loop. so i navigated to intellicast, went to radar, touched my State and that pulls up the rader in your region, then above that you see the link to "Play Animation" click it, now you get a radarloop for the last hour. once i got there i added that link to my favorites. when i want to see the weather i just open safari browser, go to thefavorits list and click it, the map comes up on my phone in radar loop.

 

The absolute best weather radar app for iphone is Radar Scope. It's 10 bucks and worth every penny. I've sent emails begging for an android version.

 

i use the weather channel app and weather bug app on my droid.

 

on android system in apps market look for "radar now" app. time laps weather radar. use it all the time. uses phone gps to find your location

 

Try "Radar Now". Free dedicated weather radar loop. Automatically detects your location. Since all it does is show a weather radar loop, it loads fast and immediately when you open it.

 

Used AccuWeather radar extensively on a bike trip last summer...was a valuable tool and very accurate. Changed our timing/paths several times as a result. Turned me into a weather junkie. I now have about 6 weather apps I refer to frequently. iPhone user, btw.

 

I use Weatherbug on my Droid X. It shows weather for your current location and any other cities you load. Has weather, alerts, radar, photos.

 

Last Thursday when the storms went through the south that killed so many, we were tracking them on laptops as they were lined up on our area. As soon as the first arrived the power went off and so did the TV and wireless modem. My wife and I both have the Droid X and we pulled up the weather.com radar map and followed the storms in our area for about 4 hrs. while hiding in the hall area. It sure relieved our minds to be able to see where the areas of bad weather were. Our power was off for about 13 hrs. and we were able to track the damage as the storm tracked on through Miss. and Alabama and Georgia. I have also used the application when out riding to see when to head home or head for cover. We live in Louisiana and like most of the country the weather changes very fast here.

 

I use the weather channel bookmark that's pre loaded in the browser of my Droid X. It's free and not a downloaded app. Since I know where I am when riding, I don't feel the need for GPS to tell me exactly where I am (GPS kills your battery). Smartphones can do just about anything you want, I just don't need it to do everything.
You can zoom in and out on the radar and see exactly where the precipitation (even cloud cover) ..very handy.