One benefit to the App Store and iPhone SDK limitations
https://marco.org/2008/08/17/one-benefit-to-the-app-store-and-iphone-sdk-limitations
WeatherBug was one of the first widespread applications to come bundled with spyware. (Technically, I think it was just adware, but nobody distinguishes anymore.) So I’d never trust it enough to install a desktop app.
But I’m fine installing their iPhone app because I know that given the restrictions imposed by both the App Store TOS and the SDK’s sandboxing, it can’t possibly do anything harmful or sinister on my iPhone.