Checker icon

Checker

BOOKSCAN
⬇ 1,000+ downloads
Est. actual: 3,256
Free
Released: May 28, 2013
No in-app purchases
No ads

Signals

3 this week · 1 positive · 1 warning All of this week's signals →
  • 📈Last 7 days +8 installs — 11% slower than the week before (+9) · 1/day since Oct 9
  • 🏆Among Books & Reference apps top 40% by installs gained this week (394 peers growing)
  • 🛠Updates quiet · updated 97 days ago
Installs since launch
0 1.6K 3.3K 3.3K May 28, 2013 today
+27 installs since Oct 9
Update history
1.8.6 Aug 7, 2026 · seen Oct 21, 2026
日差しの強さに夏本番を感じる一方、急な雨にも備えたい季節です。涼しい場所でひと息入れながら、暑い日々を乗り切っていきましょう。<br>BOOKSCANは、より快適に読書生活をお楽しみいただくために、アップデートを実施しています。最新のリリースをお伝えいたします。<br><br>■ Google Playに関する調整<br>インストール可能なAndroidバージョンを調整しました。
Only the current version so far — new entries appear as the app ships updates.

Checker is a books & reference app by BOOKSCAN with 1,000+ downloads (about 3.3K estimated). +8 installs in the last 7 days. Released May 28, 2013. Install growth, rank history, SDKs and ad networks.

From the store listing: “Checker reads the books of the bar code (ISBN) in the camera, you can display the information of the information and publishers about books.”