레슨북 - 레슨에 관한 모든 기능을 하나로! vs Duolingo: Language Lessons
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$0
$12M–$40M
Downloads / mo
9k–38k
6.6M–27M
Rating
★ 3.59 (—)
★ 4.73 (48M)
Pricing
Free
Free + IAP
Category
Education
Education
Released
5.6y ago
13.2y ago