Duolingo: Language Lessons vs Question.AI-Math Calculator
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$9.6M–$32M
$180k–$970k
Downloads / mo
2.5M–11M
260k–1.1M
Rating
★ 4.72 (5.4M)
★ 4.70 (159k)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
13.7y ago
3.2y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $9.6M–$32M/mo, versus $180k–$970k/mo for Question.AI-Math Calculator.