The usefulness of many of these apps hinges on your drilling into the settings and seeing what it can do for you and adjusting it accordingly.
I worked on this last evening because the overnight forecast was for potentially severe storms including tornado potential. I wanted to make sure the push alerts worked (though my dog probably would have woken me, too).
Alas, the storms did not pan out so no test yet of the tornado-while-asleep scenario.
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I have basically two alerts I want to know about -
Tornado Warning/Emergency and Iceberg Advisory/Warning....
Cause if an Iceberg warning gets issued for Iowa, I know things are going downhill really fast....