Honestly it looks really good, but it has less real world functionality that the built in weather app, less functionality even than the free (albeit ad-ridden) Weather Channel app.
I have all of the above and I have MegaDoppler and Nooly and Dark Sky
My recommendation would be to buy Dark Sky, or stick with the free apps.
Erichfunke about Weather Dial 2 - A Simpler, More Beautiful Weather App