iOS Universal Reference

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As featured in the AppStore!
2015 PC Magazine Editor's Choice! Awarded Best Stargazing App by Tap Magazine!

Luminos is the award-winning, all-in-one astronomy app that goes beyond simple stargazing. It combines millions of celestial objects into a beautifully-rendered space simulation that will amaze you. Our enthusiastic customers range from hobbyists to professional astronomers, and everyone in between. And now, Luminos features the largest catalog available on mobile, with more than 113 million stars!

Whether you want to admire ancient constellations, watch satellites soaring overhead, find out what that brilliant dot is on the horizon, or recreate eclipses, Luminos has what you need.
Browse the largest deep space image catalog of any mobile app, anywhere, or track 3D meteor showers now or from the past. Travel through time, identify craters on the moon, fly through space, watch the solar system in motion from high above, or see the multitudes of asteroids orbiting perilously close to our planet. Hold Luminos up against the sky and it will effortlessly guide you to find any star or planet.

You can even get live sky charts and satellite alerts on your Apple Watch! Luminos makes it all easy and fun.

Instead of buying many apps to get all of these features, Luminos includes everything in one low price. There are no in-app purchases to nibble away at your wallet and there's no advertising to distract you from views of the heavens.

When you're ready to go even further, Luminos will be ready with you. If you're fortunate enough to have a computer-controllable telescope, then Luminos can command it for you to find objects quickly and easily. Detailed data on every object is easily available within Luminos, even without an Internet connection. Powerful planning tools help you make the most of your evenings by showing you exactly what will be visible tonight or any night in the future.

Get out there and start exploring!

For more videos demonstrating Luminos, check out our YouTube channel at !

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What's New

Version 9.0.1 fixes bugs and crashes in the original Luminos 9 release. We've prevented crashes when deleting downloaded star catalogs, launching the app from a satellite flyover alert, and other less common problems. We've made pull-to-refresh for satellites easier on short screens, fixed multi-line note entry, restored descriptions for some planetary surface features, and made the Apple Watch data more reliable on first launch. We added star distance displays in parsecs, as well. Check the in-app release notes for the full list of changes.

Read on for more about the original Luminos 9 release.


The highlight of the Luminos 9 release is downloadable, customizable star catalogs featuring the largest collection available on any mobile platform: the full UCAC4 with more than 113 million stars!

Choose which size catalog you want based on your needs and device storage: Tycho-2 (2.5 million), UCAC4 Light (25 million), UCAC4 Medium (50 million) or UCAC4 Complete (113 million). Augment your choice with additional supplements such as APASS, 2MASS, Survey Photometry, Proper Motion, or Error Statistics. Catalogs are free to download and can be changed or deleted at any time.

We've also fully embraced the latest iOS 9 technologies such as split-screen multitasking and Spotlight searching on your device.

Our Apple Watch app has been updated to run faster and more reliably for watchOS 2.0, and our watch glance now includes sun/moon rise and set times, and quick access to the moon phase.

There are more additions throughout the app, such as an animated representation of the solar analemma and many new moons and textures.

Check the Release Notes in the app for more detail. Enjoy!

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