ランキングスタディ - 受験生の勉強時間記録 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
$23M–$96M
Downloads / mo
30–200
3.8M–16M
Rating
★ 3.17 (6)
★ 4.73 (5.3M)
Pricing
Free
Free + IAP
Category
Education
Education
Released
4mo ago
13.6y ago