印帳多益單字：TOEIC 分級背單字 is an education app by ZiFu紫芙 with 10+ downloads (about 26 estimated). Released Oct 28, 2026. Install growth, rank history, SDKs and ad networks.
From the store listing: “Daily stamping for vocabulary memorization: graded vocabulary, spaced review, and mock tests help you overcome the IELTS hurdle.”
