한국사 오답노트(한능검 심화 문제&해설) 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
$1–$5
$23M–$96M
Downloads / mo
3–20
3.8M–16M
Rating
★ 4.80 (5)
★ 4.73 (5.2M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
5.6y ago
13.6y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$96M/mo, versus $1–$5/mo for 한국사 오답노트(한능검 심화 문제&해설).