Classi Corp.'s tetoru（テトル） is a top-charting app on the Google Play. It has reached #4 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 | Google Play | apps | education | free | #16 |
Best Rankings
| Market | Category | List | Best Rank | Date |
|---|---|---|---|---|
| JP | education | free | #4 | 2026-04-17 |