Duolingo: Language Lessons vs 다산E북(ebook) - 전공 기술 전자책 도서
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$12M–$40M
$0
Downloads / mo
6.6M–27M
0
Rating
★ 4.73 (48M)
★ 2.96 (—)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
13.2y ago
—