4000基础必备英语单词 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
$3–$20
$23M–$96M
Downloads / mo
2–6
3.8M–16M
Rating
★ 4.67 (3)
★ 4.73 (5.3M)
Pricing
Paid $2.99
Free + IAP
Category
Education
Education
Released
4.6y ago
13.6y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$96M/mo, versus $3–$20/mo for 4000基础必备英语单词.