Moon Book

株式会社ビクセン

★ 3.8 (225 ratings)

⬇ 50,000+ downloads

Est. actual: 73,531

Free

Released: Aug 17, 2014

No in-app purchases

No ads

Signals

4 this week · 1 positive · 2 warnings All of this week's signals →

📈Last 7 days +66 installs — 72% slower than the week before (+233) · 12/day since Oct 9
🏆Among Education apps top 8% by installs gained this week (2112 peers growing)
⭐Rating steady at ★ 3.80 since Oct 9
🛠Updates dormant · updated 186 days ago

Installs since launch

+299 installs · +1 ratings since Oct 9

Update history

2.2.6 May 12, 2026 · seen Oct 25, 2026

Some bugs have been corrected.

Only the current version so far — new entries appear as the app ships updates.

Moon Book is an education app by 株式会社ビクセン with 50,000+ downloads (about 74K estimated). +66 installs in the last 7 days. Rated 3.8 from 225 ratings. Released Aug 17, 2014. Install growth, rank history, SDKs and ad networks.

From the store listing: “The Moon Book App clearly shows you when eclipse of the moon can be viewed.”