Planet Book icon

Planet Book

株式会社ビクセン

⬇ 50,000+ downloads

Est. actual: 58,089

Free

No in-app purchases

No ads

Signals

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

📈Last 7 days +24 installs — 20% slower than the week before (+30) · 4/day since Oct 9
🏆Among Education apps top 14% by installs gained this week (2230 peers growing)
🛠Updates dormant · updated 324 days ago

Installs since launch

+115 installs since Oct 9

Update history

3.2.3 Dec 25, 2025 · seen Oct 16, 2026

星図画面で天体名が英語になる不具合を修正いたしました。

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

Planet Book is an education app by 株式会社ビクセン with 50,000+ downloads (about 58K estimated). +24 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.

From the store listing: “Planet Book is, Venus, Jupiter, planets such as Saturn, to display the Where is in the stars, planet observation support app.”