I can't disagree more strongly. Neither of those apps is successful because they look good. "Good looks" implies an exceptional attention to detail, a deep understanding of the medium, and a solid experience.
More often than not, a beautifully designed piece of software will be easy to use, intuitive, and full of surprises. It makes me want to install it because I _know_ that I'm in for a treat. And when I launch it, my suspicions are confirmed with an app that works exactly as expected without hassle or surprise. Good design is a side-effect of lovingly crafted code and a well-thought out process.
More often than not, a beautifully designed piece of software will be easy to use, intuitive, and full of surprises. It makes me want to install it because I _know_ that I'm in for a treat. And when I launch it, my suspicions are confirmed with an app that works exactly as expected without hassle or surprise. Good design is a side-effect of lovingly crafted code and a well-thought out process.