Diamond Tester & Gem Scanner 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
$20–$200
$23M–$95M
Downloads / mo
30–200
3.9M–16M
Rating
★ 3.67 (3)
★ 4.73 (5.3M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
2mo ago
13.6y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $23M–$95M/mo, versus $20–$200/mo for Diamond Tester & Gem Scanner.