Duolingo: Language Lessons vs QUARTET Vocab & Kanji
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$23M–$95M
$2–$9
Downloads / mo
4.1M–17M
3–20
Rating
★ 4.73 (5.2M)
★ 3.00 (6)
Pricing
Free + IAP
Paid $0.99
Category
Education
Education
Released
13.6y ago
6.7y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$95M/mo, versus $2–$9/mo for QUARTET Vocab & Kanji.