Comet Book icon

Comet Book

株式会社ビクセン

★ 4.2 (524 ratings)

⬇ 100,000+ downloads

Est. actual: 137,868

Free

Released: Mar 27, 2013

No in-app purchases

No ads

Signals

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

📈Last 7 days +44 installs — 2% faster than the week before (+43) · 7/day since Oct 9
🏆Among Education apps top 10% by installs gained this week (2230 peers growing)
⭐Rating steady at ★ 4.24 since Oct 9
🛠Updates dormant · updated 206 days ago

Installs since launch

+217 installs · 0 ratings since Oct 9

Update history

2.7.10 Apr 22, 2026 · seen Oct 21, 2026

Some bugs have been corrected.

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

Comet Book is an education app by 株式会社ビクセン with 100,000+ downloads (about 138K estimated). +44 installs in the last 7 days. Rated 4.2 from 524 ratings. Released Mar 27, 2013. Install growth, rank history, SDKs and ad networks.

From the store listing: “The 3D view is available for viewing Comets and planets turning around the sun.”