ADI Theory & Hazards Kit 2026 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
$40–$200
$23M–$95M
Downloads / mo
10–50
14M–60M
Rating
★ 4.17 (—)
★ 4.72 (46M)
Pricing
Paid $5.99
Free + IAP
Category
Education
Education
Released
9.2y ago
13.0y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$95M/mo, versus $40–$200/mo for ADI Theory & Hazards Kit 2026.