Moon Book

Moon Book

by Vixen Co., Ltd.

0 ratings
10 reviews
Free

Details

  • Released
  • Updated
  • August 18, 2014
  • May 12, 2026
Moon Book screenshot #1 for iPhone
Moon Book screenshot #2 for iPhone
Moon Book screenshot #3 for iPhone
Moon Book screenshot #4 for iPhone
Moon Book screenshot #5 for iPhone
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About

This app visualizes lunar eclipses, showing viewing times and directions from your location. Plan your observations by setting specific locations and previewing eclipse phases.

Lunar eclipse viewing times
Direction of eclipse visibility
Location-specific eclipse phases
Pre-set observing locations
Overseas eclipse start times
Thumbnail images of eclipse phases
Show original description

What's New in Moon Book

2.2.3

May 12, 2026

Some bugs have been corrected.

User reviews

ずれ?

これ 
たとえば5/1の月出時刻と月入時刻を確認したときに深夜0時を過ぎてから最初に来るのが月出なのか?月入なのか?ってその日によるんですけど、今出ている月が何時に沈むのか?を知りたいときは翌日の月入時刻みなきゃですよね? その日の枠の中で時系列がわかると更に良いかな?って なんとなくその日によって時系列の上下が変わると「これは翌何時」って事なのかな?って思ってしまいました。

新聞などの月齢とのズレ

いつも参考にさせてもらい、重宝しています。ただ、タイトルにあるように、どうも新聞に記載されている月齢とのズレがあるのではないかと思います。具体的には、Moon Bookの方がざっと1日遅れているような…。原因は不明。表示の設定でなんとかなるのか、私の見方が間違っているのかよく分かりませんが、今のところ1日早めに(アプリの表示の翌日の状況を参考にして)動くようにしています。

月齢が見られなくなった

前回更新後から、月のマークを押しても月食表示しか出なくなって困っています。

使いやすい

楽しいです!

ウィジェット

にも対応してもらえると嬉しいです

Developer apps

FAQ

What lunar eclipse information does Moon Book provide?

Moon Book shows you when and from which direction lunar eclipses can be viewed. It details the start and end times of penumbral eclipses and the differing start times for total eclipses based on your location.

Can I plan to view eclipses in different locations with Moon Book?

Yes, you can set up any observing place beforehand if the moon eclipse star chart is selected. This allows you to know in advance where the Earth's shadow will start hiding the moon, even for distant locations or overseas.

How does Moon Book display eclipse phases?

Tapping the moon icon on the star chart reveals thumbnail images of the moon eclipse phases at regular intervals. You can also change the interval of these thumbnail images.

Is Moon Book suitable for beginners in astronomy?

Yes, Moon Book is designed to clearly show viewing times and directions, making it accessible for those new to observing lunar eclipses. Its focus on location-specific data simplifies planning.

What devices is Moon Book available on?

Moon Book is available on iPhone, iPad, and iPod. It is designed for Apple's mobile operating systems.

How often is Moon Book updated?

The latest version is 2.2.2, last updated on January 27, 2026. This indicates a history of updates, though the exact frequency is not specified.

Does Moon Book have ads?

No, Moon Book does not contain advertisements. It is a completely ad-free experience for users.

What is the age rating for Moon Book?

Moon Book has an age rating of 4+. This suggests it is suitable for young children and general audiences.