Duolingo: Language Lessons vs Grammar Check by AI Writing
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$13M–$43M
$10k–$52k
Downloads / mo
8.2M–34M
28k–120k
Rating
★ 4.73 (47M)
★ 4.17 (24k)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
13.2y ago
3.4y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $13M–$43M/mo, versus $10k–$52k/mo for Grammar Check by AI Writing.