Biology: 39 Year Past Papers 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
$0
$23M–$96M
Downloads / mo
8k–32k
14M–60M
Rating
★ 4.17 (19k)
★ 4.72 (46M)
Pricing
Free
Free + IAP
Category
Education
Education
Released
6.8y ago
13.0y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$96M/mo, versus $0/mo for Biology: 39 Year Past Papers.