日本史一問一答（解説付き） 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
$600–$4k
$12M–$40M
Downloads / mo
2k–8k
6.6M–27M
Rating
★ 4.69 (—)
★ 4.73 (48M)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
9.7y ago
13.2y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $12M–$40M/mo, versus $600–$4k/mo for 日本史一問一答（解説付き）.