Doesn’t work in the USA
Seemed to pick up my longitude (but latitude is fixed at 35) and time, but the sky is totally off. I suspect it is trying to show the sky in Japan for my US time. Could be a neat app if it truly worked outside Japan.
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This app simulates the night sky, displaying stars, planets, and the moon. It functions like a traditional planisphere but with added digital features, allowing users to easily view celestial positions and predict sunrise/sunset times.
✓Real-time sky display
✓Planet and moon tracking
✓Interactive sky map
✓Sunrise/sunset prediction
✓Zoomable interface
✓Dark-friendly screen
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What's New in 星座早見 / Planisphere
7.3.2
June 9, 2026
Corresponds to 50 degrees north latitude. Image update.
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FAQ
What is the Planisphere app?
The Planisphere app is a digital tool designed to simulate the night sky. It was originally created by the planetarium curators of the Nagoya City Science Museum and offers an IT-era advantage over traditional paper planispheres.
How do I use the Planisphere app?
Using the Planisphere app is similar to a traditional planisphere. You can drag the date scale to set the date and time, and use pinch gestures to manipulate the sky map. The app displays the sky for the current time upon startup.
Can the Planisphere app show planets?
Yes, the Planisphere app can display the positions of the five planets visible to the naked eye, as well as the Moon. This is a key advantage over printed planispheres, as planet positions change daily.
Is the Planisphere app good for use in the dark?
Yes, the Planisphere app is designed to be used in dark places. Unlike a printed planisphere which requires a torch, this app uses its screen light. A tip is to reduce screen brightness to avoid being dazzling.
Can I use the Planisphere app for educational purposes?
Absolutely. The Planisphere app is friendly to all ages and can be easily projected onto a larger screen for classroom or museum explanations. It's a more accessible way to teach how to use a planisphere.
Does the Planisphere app have ads?
No, the Planisphere app does not contain advertisements. It is a completely ad-free experience for users.
What devices does the Planisphere app support?
The Planisphere app is supported on iPhone, iPad, and iPod devices. It is designed to be accessible on various Apple mobile devices.
How often is the Planisphere app updated?
The Planisphere app was last updated on May 12, 2026, with version 7.2.2. This indicates a recent update, suggesting ongoing development and maintenance.
