Comet Book is made and published by 株式会社ビクセン. AppBrain is an independent app data site and isn't affiliated with 株式会社ビクセン. The app name, icon, screenshots and description belong to 株式会社ビクセン and are shown as published on Google Play.
AppBrain's verdict
EstablishedWell rated- Total installs
- 140 thousand
- Rating on Google Play
- 4.39
- 485 ratings
- Last updated
- April 21, 2026
Comet Book has 140 thousand installs. Users rate it well: 4.4 stars from 485 ratings.
Installs
Tracked by AppBrain- Last 30 days
- 240
- Play install range
- 100+ thousand
- Launched
- September 2013
Installs over time
Comet Book has been installed 140 thousand times. Over the past 30 days, it has been installed 240 times.
Rankings
Google Play top chartsGoogle Play Rankings for Comet Book
Competitors
Similar apps and more from 株式会社ビクセン
Releases
Updates seen on Google Play- Version
- 2.7.10
- Launched
- September 2013
User feedback
Ratings and reviews on Google PlayGoogle Play Rating history and histogram
Comments on Comet Book for Android
Technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 7
- App size
- 2.82 MB
- Needs Android
- 5.0+
- Content rating
- Everyone
Technologies used by Comet Book
About the app and developer
About Comet Book
Comet Book is an education app developed by 株式会社ビクセン.
How many times has Comet Book been downloaded?
Comet Book has been downloaded 140 thousand times. In the last 30 days, the app was downloaded 240 times.
What is the rating of Comet Book?
Comet Book is rated 4.39 out of 5 stars, based on 490 ratings.
Is Comet Book free?
Comet Book is free. The APK size is 2.82 MB. The latest APK version available is 2.7.10. The last update was on April 21, 2026.
What are the requirements for Comet Book?
Comet Book requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since September 2013.
App Performance Report
Get a detailed PDF report for Comet Book with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for 株式会社ビクセン
Store listing
By 株式会社ビクセン, from Google Play“The 3D view is available for viewing Comets and planets turning around the sun.”
Description by 株式会社ビクセン Written by the developer, not by AppBrain. Click to read.
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.
Recent changes:
Some bugs have been corrected.