Classi株式会社's tetoru（テトル） is a top-charting app on the App Store. It has reached #13 on the Japan Top Free chart. It is currently in the top 50 in Japan.
Chart History
Rank over the last 30 days
Currently in Top 50
| Market | Store | Tab | Category | List | Rank |
|---|---|---|---|---|---|
| JP | App Store | apps | education | free | #27 |
Best Rankings
| Market | Category | List | Best Rank | Date |
|---|---|---|---|---|
| JP | education | free | #13 | 2026-05-16 |