CITB Op/Spec HS&E test 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
$30–$200
$23M–$95M
Downloads / mo
6–30
4.1M–17M
Rating
★ 5.00 (12)
★ 4.73 (5.2M)
Pricing
Paid $6.99
Free + IAP
Category
Education
Education
Released
7.1y ago
13.6y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$95M/mo, versus $30–$200/mo for CITB Op/Spec HS&E test.