技術士 建設部門 過去問集 | 技術士 専門科目の対策アプリ 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
$1–$8
$12M–$40M
Downloads / mo
1–3
6.6M–27M
Rating
—
★ 4.73 (48M)
Pricing
Paid $1.99
Free + IAP
Category
Education
Education
Released
1.5y ago
13.2y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $12M–$40M/mo, versus $1–$8/mo for 技術士 建設部門 過去問集 | 技術士 専門科目の対策アプリ.