Baby Sensory Signbook 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
$100–$800
$24M–$97M
Downloads / mo
60–300
3.5M–15M
Rating
★ 4.04 (—)
★ 4.72 (46M)
Pricing
Paid $4.49
Free + IAP
Category
Education
Education
Released
9.0y ago
13.1y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $24M–$97M/mo, versus $100–$800/mo for Baby Sensory Signbook.