ArkTech LLC · jp.shikaku.eiseikankyo · Books & Reference
Google Play shows 1+ for 環境/衛生系専門資格 第一種衛生管理者,公害防止管理者等. The counter behind it stood at 1 lifetime downloads on Aug 20, 2026. Recorded by AppCurves, once a day, from the public Play listing — not modelled, not estimated.
| Date | Lifetime downloads | Added |
|---|---|---|
| Aug 17, 2026 | 1 | — |
| Aug 20, 2026 | 1 | held |
Android only — Apple publishes no download counts. Questions · llms.txt