排水設備工事責任技術者 試験対策 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
$23M–$95M
Downloads / mo
10–80
4.1M–17M
Rating
★ 4.00 (2)
★ 4.73 (5.2M)
Pricing
Paid
Free + IAP
Category
Education
Education
Released
2mo ago
13.6y ago