# Moon Book

> Lunar eclipse viewing times and directions based on your location. (iPhone/iPad app by Vixen Co., Ltd..)

- Source: https://appshunter.io/ios/app/moon-book/id906552724 (this page in markdown: same URL + `.md`)
- Developer: [Vixen Co., Ltd.](https://appshunter.io/developer/536188843)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 22 MB
- Languages: English, Japanese
- Released: 2014-08-18
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/moon-book/id906552724/reviews.md

## What is Moon Book?

The Moon Book App clearly shows you when and from which direction eclipse of the moon can be viewed.

The time of beginning or ending penumbral eclipse is simultaneous around the country but a place of beginning total eclipse differs from pace to place.  The Moon Book will show you the phases of the moon eclipse at your place. 

You will be able to set up any observing place beforehand if the moon eclipse star chart is selected.  When you move to a distant place for observing the moon eclipse, you will be able to know in advance a place where the Earthfs shadow starts hiding the moon.  
You will be able to check a start time of the moon eclipse overseas also.

Tapping on the moon icon at the upper left corner of the star chart will show you thumbnail images of the phases of the moon eclipse at regular intervals.	The interval of the thumbnail images can be changed.

## Key features

- 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

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/moon-book/id906552724/reviews.md

### 5/5 — ずれ？

*2026-04-30*

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。

### 4/5 — 新聞などの月齢とのズレ

*2025-02-14*

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。

### 3/5 — 月齢が見られなくなった

*2025-01-07*

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。

### 5/5 — 使いやすい

*2023-03-23*

楽しいです！

### 4/5 — ウィジェット

*2023-02-23*

にも対応してもらえると嬉しいです

### 5/5 — 使いやすい！

*2017-06-09*

月食の軌道がわかるのはありがたい！

使い方が単純で、使いやすい(*´◒`*)

いいアプリをありがとうございます！

### 5/5 — 素晴らしい！！

*2017-06-08*

月の場所が瞬時にわかるし、
星座もひと目でわかる！！
画面が見た方向に動くから、
ほんとにわかりやすい！！

### 5/5 — わくわく！

*2015-04-03*

マックスむらいさんの記事から飛んで来たのですが、
明日の皆既月食が楽しみです！
絶対見逃さないよう、目をどでかく開いて観察したいと思います笑

### 5/5 — 星5です

*2015-04-03*

youtubeで紹介されていたのでいれてみたら良かったです天体観測に便利だと思います。

### 4/5 — 便利そうだが

*2014-10-11*

デバイス追随モードでは上下にしか追随してくれません。
横（方角）を変えるには追随モードをやめて指でスクロールするしかない。

## Frequently asked questions about Moon Book

### 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.

## Version history (last 5 releases)

### 2.2.3 — 2026-05-12

Some bugs have been corrected.

### 2.2.2 — 2026-01-27

Some bugs have been corrected.

### 2.2.1 — 2024-12-04

Corrections have been made for some program bugs.

### 2.2 — 2024-09-24

The Moon Book app now lets you select lunar eclipses up until 2040.

### 2.1.5 — 2022-11-11

Added 8 lunar eclipse information from 2026 to 2030.

## Apps similar to Moon Book

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [SpaceStationAR LITE](https://appshunter.io/ios/app/spacestationar-lite/id1023377153) | 4.5 (139) | Free | Education |
| [Atlas of Moons](https://appshunter.io/ios/app/atlas-of-moons/id1520266563) | 4.5 (25) | Free | Education |
| [Solar Coaster](https://appshunter.io/ios/app/solar-coaster/id1218422388) | 5.0 (2) | Free | Education |
| [Real Solar System](https://appshunter.io/ios/app/real-solar-system/id6475644962) | — | Free | Education |
| [Moon phases assist](https://appshunter.io/ios/app/moon-phases-assist/id1070111214) | 3.5 (2) | Free | Education |
| [Eclipse Explorer](https://appshunter.io/ios/app/eclipse-explorer/id1252295023) | 4.0 (1) | Free | Education |

## More apps by Vixen Co., Ltd.

- [Comet Book](https://appshunter.io/ios/app/comet-book/id604782335)
- [PF-L Assist](https://appshunter.io/ios/app/pf-l-assist/id940306488)
- [Solar Book](https://appshunter.io/ios/app/solar-book/id1078873201)
- [NightVision Light](https://appshunter.io/ios/app/nightvision-light/id1081761997)
- [Mars Book](https://appshunter.io/ios/app/mars-book/id1342509724)

All apps by Vixen Co., Ltd.: https://appshunter.io/developer/536188843

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-07.*