What you get with Stellarium is a database that contains more stars than any other app, but not as many asteroids as Sky Safari. After all, programmers need to make a living too, but at $19.99, it won't break the bank.

However, unlike its Windows and Mac counterparts, you need to pay for it.

The mobile version of the well-known open-source desktop app is a fantastic app that's known for the quality of its constellation illustrations.

Download SkySafari 7 Pro: Android (opens in new tab), iOs (opens in new tab).

Download SkySafari 6 Pro: Android (opens in new tab), iOs (opens in new tab).

Be mindful though, it takes a whopping amount of your device's storage space. Amongst other enhancements, the main improvements include a simplified interface and an extended database as standard.

Sky Safari 7 Pro (opens in new tab) is even cheaper than Sky Safari 6 - you can get it for $26.99. There are many more features of the previous version that we looked at in our in-depth Sky Safari 6 Pro review, and now there's a newer version out we can't wait to test out even more features it has to offer. As an educational tool, this app is hard to beat. We love the fact that it backs up your settings and provides telescopic images and object information.

We also love the powerful Events Finder, where you can utilize the search engine to find events that are happening tonight and far into the future. A great feature is 'Sky Tonight' - a guided tour of the finest sights on show that night. You can also connect it to your telescope and have it guide you around the stars. A comprehensive app that once sat at the more expensive end of the market, Skysafari 7 Pro is festooned with information about the night sky - you're almost guaranteed to learn something from it, even if you're a veteran stargazer steeped in astronomical lore.

Stellarium app iphone