Stellar Tour is the only AR stargazing app written by an astrophysicist. Point your phone at the night sky and get a guided tour of everything up there: two billion real stars, every planet and major moon, eclipses, meteor showers, and 13,000 deep-sky objects.
Astrophysicist Dr. Aaron Day wrote every word. Instead of the standard flood of random facts, Stellar Tour tells the scientifically accurate story of each world: what it is like on the ground, in the seas, or floating through the clouds.
THE NIGHT SKY, FOR REAL
• Two billion stars from ESA's Gaia survey, each in its true position. Pinch to zoom from your backyard to the galactic core.
• The Milky Way as it actually looks, with constellations, planets, and satellites overlaid on your live sky.
• Night Vision mode keeps your eyes dark-adapted with a pure red display.
ECLIPSE EXPLORER
Simulate any solar or lunar eclipse from your exact location: local timings, a disc animation of the Moon crossing the Sun, and a live countdown. Built for the total eclipse of August 12, 2026.
PLAN YOUR NIGHT
• Sky Calendar: every eclipse, meteor shower, conjunction, and full moon. The week ahead is free; the full year comes with the expansion.
• Night Planner: the best targets for your sky tonight, hour by hour. Cloud cover from the weather forecast is reported so you can plan ahead.
• Reminders that fire only when something is worth stepping outside for, including the International Space Station and Tiangong Space Station passes with a live countdown.
GO DEEPER
• Telescope Catalog: 13,000 NGC, IC, and Messier objects, searchable and shown on your sky.
• Exoplanets: nearly every known world, in its actual position on the sky, with sizes, temperatures, and orbits.
• The Solar System up close: planets and major moons in NASA probe imagery, in visible light, ultraviolet, infrared, and radar. Rotate them to any angle.
FOR EVERYONE
• Kid Mode rewrites the whole tour for young explorers.
• Birthday Sky: a shareable card of the sky on the night you were born.
• Smart search: ask for exactly what you want.
Take the Stellar Tour!
If you have a curiosity or already love Astronomy I couldn’t recommend this app more. It’s so detailed and well made. The animations are so smooth. And as you move your phone around the sky it’s so awesome to see in real time the things our eyes just don’t catch. The developer helped improve the app with the kindness and professionalism that you wished every app developer had. Cheers to you Aaron, you have such a gift as an artist. I will buy any app you ever create in the future. Cheers!
Developer Response
Thanks for taking the time to give feedback. In the next release, there will be a way to turn off constellations. I’m not a fan of them myself (if that’s not clear from the text) but a lot of people have requested them.In regards to the L-shaped black border, I haven’t seen anything like this in any of my testing. Apple makes many devices, so it’s possible you have one I haven’t tested on. If you could let me know which device you’re using, and maybe even send me a screen shot, that would be incredibly helpful in fixing this bug.Also, if you have any feature requests, please send them my way. You can contact me at:cosmologyapp@gmail.com
Stellar Tour
Ljon56
I would like to take this opportunity to express how I feel about this app. It is a very good app to use for learning all about the planets in our galaxy. The true location of the planets and the many stars throughout space are easy to find using the search function. I will be recommending this to all my friends. Thanks for putting together this wonderful app that can also be used for a learning tool.
Excellent
KY Crafted
This is an excellent product in so many ways. I’ve tried it out on a friends iPad a few nights before I decided to get it myself. A great teaching aid for my grandson who at 8 years of age loves star gazing and dinosaurs. The only negative thing that I feel should be addressed is the font used to identify the objects in the sky. The thin stroke serif face is hard for older eyes to see and is most frustrating to me. Perhaps a thicker stroke San serif face that can be dimmed if need be.
Developer Response
Thank you for your suggestion. In the latest version of the app, you can control the font sizes used for the labels you speak of on your iOS settings. Go to Settings > Accessibility >Display & Text SizeFrom there, you can turn on bold text. You can also adjust the font size in the “Larger Text” section. These settings will control font sizes in every app on your device, including Stellar Tour.Hope this helps!-Aaron
Amazing!
ThaRealSnowWhite
This is the best star gazing app I’ve used so far! I really appreciate the beautiful UI as well as all of the educational information. I love that you can tap on any known object in the sky and get a plethora of information on the object. I homeschool my 7-year-old son and this app has been an essential tool for us when we cover astronomy. A huge thank you to the developers for this amazing app!
The total solar eclipse is August 12. Eclipse Explorer gives you the exact times for wherever you are standing, and that eclipse's page is free for everyone through the 12th.
This update fixes the eclipse screen's location heading, which appeared in English for readers in other languages and sometimes forgot the place name entirely. It also corrects a few facts in the object descriptions, including how long Io takes to orbit Jupiter.
The developer, Aaron Day, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
