技術士 基礎科目 過去問集 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
$10–$50
$24M–$97M
Downloads / mo
8–40
3.5M–15M
Rating
★ 0.00 (—)
★ 4.72 (46M)
Pricing
Paid $1.99
Free + IAP
Category
Education
Education
Released
1.5y ago
13.1y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $24M–$97M/mo, versus $10–$50/mo for 技術士 基礎科目 過去問集.