Comet Book

Name: Comet Book
Author: Vixen Co.,Ltd.

By: Vixen Co.,Ltd.

Education

Features & Capabilities

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.

User Growth & Download Statistics

App

By:

Vixen Co.,Ltd.

Version:

2.7.5 Last updated: 2026-04-22

Version code:

884781597

Creation date:

2013-03-07

Compatible devices:

Size:

9.71MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-06

Compare stats and ranking:

Ranking

# 1,288,771 ▼ 583,010

For Developers

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Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Vixen Co.,Ltd.

Apple Apps Store

https://apps.apple.com/co/app/comet-book/id604782335?l=en-GB

User Reviews

Nice and simple interaction design allowing the user to understand from different perspectives.

by si*****, 2025-11-23

This one of the very few comet finder apps and it even provides a 3d orbit view. It's difficult to find in the English app store, maybe due to a few Japanese symbols still used in the app?

by a_*****, 2025-07-15

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 Explore. 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.