There can never be too many stargazing apps and Pocket Universe is a worthy competitor to Star Walk. Pocket Universe works in a very similar manner to Star Walk, once you launch the app the geolocation information is collected and with the iPhone's GPS and compass features the app orients the night sky on your iPhone with all the necessary labels. You can track through the night sky virtually on your iPhone, locate stars and constellations, and obtain information about planetary bodies. The "time travel mode" on the app is pretty cool, it allows you to look at how the night sky will appear on a future date. Pocket Universe also keeps its users informed of any expected meteor showers, lunar phases and similar celestial events so that you can get a first hand view on a telescope at home or at an observatory.The Tonight's Sky report is a great feature which keeps the app's users informed on all the events that will occur on any given day like, planetary visibility, moonphase and several other snippets of useful information. Pocket Universe also incorporates the "night vision mode" (meaning a reddish dimmed display to keep your eyes ready to focus on the night sky). A well thought out and designed app, Pocket Universe is a wonderful alternative to Star Walk and should increase your astronomy skill set considerably.