消防設備士乙6類【過去問ドリル】 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
$0
$24M–$98M
Downloads / mo
0
4.3M–18M
Rating
★ 4.40 (—)
★ 4.73 (46M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
—
13.1y ago