The worlds now turn the way they truly turn. In Time travel, Earth shows the hour you are living in.
An orrery is a mechanical model of the solar system. This is yours, alive in light.
Open the app and fly: all eight planets, Pluto, the Moon, and a working asteroid belt orbit a glowing Sun in real relative motion. One finger orbits the camera, a pinch zooms, and a tap on any world glides you to its sunlit side.
Earth, Moon, and Sun are free to explore in full. One purchase unlocks the whole solar system. No subscription, no ads, no accounts, ever.
EXPLORE
Every world has a full page: a spinnable globe, NASA-sourced vital statistics, an animated size comparison, and a "Did you know?" carousel.
LISTEN
A narrated story for every world, written from NASA sources.
THE GRAND TOUR
An eleven-stop guided cruise from the Sun to Pluto.
TIME TRAVEL
One switch sets every world where it truly is right now, computed on device from JPL planetary theory. Then visit the moments that made history: Neptune's discovery night (1846), Apollo 11 (1969), Voyager 2 at Neptune (1989), New Horizons at Pluto (2015).
YOUR SKY
Choose a day that matters and the whole orrery travels to it. The planets move to where they truly stood, and the day becomes a card you can keep or share: the phase of the Moon, the constellation the Sun was crossing, and two lines written for that sky alone.
ON YOUR HOME SCREEN
A living miniature orrery widget, every planet in its true position, plus a world of the day with a fresh fact each morning.
STARGAZER SCHOOL
Seven illustrated mini lessons on the big questions. Why days and years happen, why Pluto isn't a planet anymore, the farthest we have ever traveled, how telescopes see back in time, living in space, Hubble and Webb, and the Space Station overhead. Interactive diagrams and real NASA photography.
THE COSMIC QUIZ
Five fresh questions every run, drawn from sixty.
IN YOUR ROOM
Place the solar system on your table with AR. Toggle true distances and walk to Neptune.
SPEAKS YOUR LANGUAGE
English, Spanish, French, Simplified Chinese, and Vietnamese. Follow your device language or switch right in the app; every story is narrated in every language.
TRUE SCALE
One switch spreads the orbits to real relative distances. Space is unimaginably empty; feel it.
Built for curious kids and the adults who point at the sky with them. Fully supports VoiceOver, Dynamic Type, and Reduce Motion. Collects nothing, tracks nothing.
Its SO GOOD AND ALSO WHEN YOU GET THE APP THERE IS NO SUBSCRIPTIONS UNLIKE SOME APPS I REALLY RECOMMEND GETING THE PASS TO VIEW ALL PLANETS ITS SO GOOD AND ALSO I VIEWED THE WHOLE THING…AND THERE WAS NOTHING WRONG WITH IT AT ALLLLL there were only one glitch and it hardly lets you click the plants but guess what THEY JUST MADE IT SO THERES A TOUR BUTTON AND ITS WAYYY BETTER AND FIXED THE GLITCH I RECOMMEND THIS APP A LOT as someone who loves space if you love space too you will love this app
Developer Response
Thank you so much space traveler! Please feel free to contact us anytime if there is anything you would like to add or fix to make your experience even more enjoyable
Such a beautiful educational game!
Brianna Tutera
this app really emphasizes and bridges the educational and pure wonder of learning about space :)
Developer Response
Hi Brianna, Thank you for the encouragement! We're glad you have been enjoying Orrery so far. Please do not hesitate to let us know what else we can do to improve your experience further.
Moon direction wrong
TopAppReviewer421
This is a great concept, but the moon direction seems wrong. It shows the northern hemisphere at the top, so the moon should be orbiting counterclockwise. Also, it would be nice to show the earth rotation based on the current time of day.
Developer Response
Thank you for this constructive feedback. You were right on both counts, and we should have caught it ourselves. The orbits were being drawn clockwise as seen from above the north pole, when the real solar system runs counterclockwise. Everything was in the correct position relative to the Sun, so it slipped past our checks, but the direction of travel was mirrored. That is fixed in the upcoming 1.4 version.Regarding the second suggestion, Earth now rotates to the real time of day on Today in Time travel mode: the daylight side is where daylight actually is. We will have more dedicated features for Earth soon, please stay tuned.If you spot anything else, or have other ideas, please feel free to contact us anytime. Feedback this precise makes the app better!
The worlds move the way they truly move. Every planet and the Moon now travel counterclockwise around the Sun, the way the real solar system runs, and each one leans on its own true axis, so Earth's seasons fall where they belong and Venus turns backward as it really does.
Rotation joins the journey. In Time travel every world is turned exactly as it stood at that moment, and on today that means Earth shows the hour you are living in: the daylight side is where daylight actually is right now. The Moon keeps its familiar face toward us, the way it always has.
Version 1.4
The developer, Thu Van Ngo, 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
The developer indicated that this app supports the following accessibility features. Learn More
