Additional features include:
- GPS support for setting geographic coordinates
- Advanced text search including phonetic search
- Multitouch gesture support for zooming and panning
- Innovative "Quick Links" providing seamless integration with Wikipedia articles
You can grab a free trial of What's Up that will give you full functionality for 5 days, after which pinch-to-zoom and search will be disabled. The full version is just $.99 and definitely worth it if you ever look up in the sky and wonder what it is you're looking at. My kids especially love it, and I think it's an awesome tool for teaching them about all those mysterious twinkles in the sky. Download or purchase What's Up from the links below, and check out a few extra screenshots after the break. (Unfortunately, the screenshots don't really do the app justice due to the reduced size.)
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