Bookshelf Scanner 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
$50–$400
$3.3M–$11M
Downloads / mo
80–400
3.1M–13M
Rating
★ 4.18 (38)
★ 4.72 (5.4M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
6.0y ago
13.8y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $3.3M–$11M/mo, versus $50–$400/mo for Bookshelf Scanner.