電験三種 電力科目 秒トレ 第三種電気主任技術者 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
$90–$600
$12M–$40M
Downloads / mo
200–1k
6.6M–27M
Rating
★ 4.60 (—)
★ 4.73 (48M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
4.1y ago
13.2y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $12M–$40M/mo, versus $90–$600/mo for 電験三種 電力科目 秒トレ 第三種電気主任技術者 試験対策.