From the minimalist Store description:
Meet all-new Star Walk 2, with exclusive artwork and 3D constellations
And, more helpfully, from MSPU:
Vito Technology, the publisher of Star Walk, has released the sequel for mobile viewers everywhere. The popular go to app for stargazers to view more than over 200,000 celestial bodies has finally landed in the Windows Store for both mobile and PC users.
This interactive app comes with exclusive artwork and 3D constellations, as well as extensive information about the stars, planets, satellites and constellations that you come across, all you have to do it’s point your device at the sky. The app features an all new stunning design, Times of sunset and moon phases, and real-time motion tracking.
The app has already been available on iOS and Android for free, and cost $2.99 in the Windows Store. The app also features other in-app purchases. Download below.
The full app description comes from other platforms:
Star Walk 2 is an exquisite stargazing tool that combines astronomical data with premium technology to deliver an effortless journey through thousands of stars, comets, and constellations. All you have to do is point your device at the sky.
- New simpler and cleaner interface in vibrant colors for retina displays
- Atmospheric visual and sound effects, stirring soundtrack
- Exclusive handcrafted artwork for constellations, inspired by minimalist low-poly art
Incredible 3D models of celestial bodies*:
- Planetary nebulae
- Constellations
- Dwarf planets, comets, and asteroids
- Man-made satellites
- Layer by layer planets and missions
*Available through In-App Purchase. Constellations are available for free for limited time.
DISCOVER NEW DEPTHS
Star Walk 2 is the first astronomy guide to introduce plausible three-dimensional models of planetary nebulae. Star groupings of the 88 officially recognized constellations are also presented in volume. You can see them as separate entities, turn them around and take a look from the other side. Complemented by articles on connected myths and history, this is the most comprehensive collection of information on constellations.*REAL-TIME MOTION TRACKING
As you hold your phone up and point it towards the sky, Star Walk 2 follows your motions using the built-in digital compas to match the map on your screen to the stars seen from your location. Easily find any star, constellation, or satellite in the sky by tapping Search. Star Walk will indicate the direction to look in.NEW POINT OF VIEW
Unlike on a plain photograph, every star in Star Walk 2 has coordinates. That means you can look at objects, for instance, a constellation from any vantage point in space, not to mention the ultimate accuracy of your map for your exact location.NOW AND LATER
Star Walk 2 gives you accurate daily data on current moon phase, time of sunset and sunrise, and elevation of planets. With just one slide you can see how the sky will look later tonight or throughout the year.PRO STARGAZING
Special night-time soft red mode will help you preserve night vision when stargazing with a telescope. You can see the sky in X-Ray (and 5 more filters) to study the invisible structure of the universe. Live tracking for over 8,000 satellites will help you catch iridium flares, and detailed articles will satisfy the most curious inquirer.
In addition to the couple of quid purchase price, there are six in-app-purchases, but none of these are outrageous and I doubt any seasoned star gazer will baulk. The mass of graphical detail included does mean that it's a 360MB download and I'd bet you'll need a Gigabyte free for installation and storage, so allow for this.
Among a wealth of other astronomical detail, Star Walk 2 acts as a HUD for night time star gazing:
There's a promo animation too, if that helps visualise what's in the application:
You can grab Star Walk 2 here in the Store.