REVIEW UPDATE:With the latest update to this app, the addition of the moon tracks, this app really shines. It even includes the moon's location below the horizon as well as when it's overhead (and this is all in the free version). The icon is a full moon, no matter what phase the actual moon is in, but that's okay, it's just the location marker anyway.Another developer request: Could you do a tiny bit of tweaking on the moon feature? It would be nice if you could show the location and time of moonrise and moonset like you do with sunrise and sunset. Also, could you add a toggle in the settings to turn on and off the hourly moon track display? I would be requesting this toggle for the pro version for the sun tracks as well, that is, once I upgrade!ORIGINAL REVIEW:If you're looking for sun angle of elevation information for today only, then this free version is for you. If you need to look in the future or past, there's that rather pricey in app upgrade (which really should be $.99).What sets this app apart from similar apps is the see-through view mode which allows you to point your gyroscopic iPhone (I'm on a iPhone 4S) toward the sky and see three things: There's an icon of the sun that appears exactly at the point of sunrise and sunset and one overhead where the sun is right now. Of course, pointing your camera right at the sun for an extended time is certainly not a good idea, but it really does work in that the icon hovers right over the sun. The only thing I found like this is the app "Planet Finder", but that app doesn't show you sunrise and sunset, only the current position of the sun, moon and planets.In the app upgrade, you can see the track of the sun hour by hour in the view mode from point of sunrise to point of sunset. This sounds really cool, but I'm not ready to spring three bucks for it.Still, this is a great app for free. Check it out!Developer request: In addition to lowering the in app purchase price, could you add the ability to save the screen with the sun icon to the photos library (perhaps a little camera icon in the corner somewhere)? That way it could double as a simple camera app, and also let us photograph where sunrise and sunset are happening. Thanks!