Duolingo: Language Lessons vs TI Nspire Calculator Manual
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$23M–$95M
$60–$300
Downloads / mo
4.1M–17M
10–80
Rating
★ 4.73 (5.2M)
★ 2.82 (34)
Pricing
Free + IAP
Paid $4.99
Category
Education
Education
Released
13.6y ago
10.6y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$95M/mo, versus $60–$300/mo for TI Nspire Calculator Manual.