Book Builder: School Edition 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
$70–$300
$23M–$95M
Downloads / mo
10–60
3.9M–16M
Rating
★ 4.77 (13)
★ 4.73 (5.3M)
Pricing
Paid $7.99
Free + IAP
Category
Education
Education
Released
2.2y ago
13.6y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$95M/mo, versus $70–$300/mo for Book Builder: School Edition.