Duolingo: Language Lessons vs Letterland Stories KLM
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–$96M
$9–$40
Downloads / mo
3.8M–16M
3–20
Rating
★ 4.73 (5.2M)
★ 3.80 (5)
Pricing
Free + IAP
Paid $4.99
Category
Education
Education
Released
13.6y ago
9.7y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$96M/mo, versus $9–$40/mo for Letterland Stories KLM.