電験三種 機械科目 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
$40–$300
$12M–$40M
Downloads / mo
100–600
6.6M–27M
Rating
★ 4.72 (—)
★ 4.73 (48M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
3.6y ago
13.2y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $12M–$40M/mo, versus $40–$300/mo for 電験三種 機械科目 秒トレ 第三種電気主任技術者 試験対策.