Comet Book 4+

Vixen Co.,Ltd.

    • 4.6 • 10 Ratings
    • Free



The Comet Book app clearly shows when Comets can be viewed and in which direction. The direction and elevation of a Comet can change noticeably in a day due to its fast apparent motion. The moon and a bright planet may be convenient as a guide to find the comet though they have large apparent motion, too.

This app determines where Comet is in the sky when it becomes visible at your observing site. You can easily start your observation of a Comet by using Comet Book as a guide to the direction and elevation of the comet.

In addition, the new “3D Solar System seen from Space” mode allows you to view the motion of Comets and planets turning around the sun. Please take a look the comet’s movement around our solar system.

What’s New

Version 2.5.3

Expanded the variable range of dates.

Ratings and Reviews

4.6 out of 5
10 Ratings

10 Ratings

AstroGirlBunny ,

It is beautiful!

It is too bad the other user did not try it out after the update. Then update his review. The tutorial was a thing of beauty. Afterwards, I checked out different comets, walking through them like the previous instructions taught me. Everything works wonderfully! The developers did an amazing job!!!!

sorensenbrad ,

Visually Stunning

While the app looks awesome I have a few asks…
I only see the one comet that comes with the install, why can I not see and explore lots of comets?

There should be a DB of comets to

Also the time and date should be able to be adjusted to view comets in DB.

This being said the app is visually stunning and has tons of potential. I really look forward to future updates.

the Indestructible Virus ,

PERFECT comet app!

I downloaded this after I heard about Neowise being visible this evening and I am not disappointed at all! This app is perfect and I will continue to use it for years to come!

App Privacy

The developer, Vixen Co.,Ltd., 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

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