Duolingo: Language Lessons vs Solar Walk 2 Ads+：Solar System
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$3.5M–$12M
$3k–$16k
Downloads / mo
7.0M–29M
9k–35k
Rating
★ 4.73 (49M)
★ 4.12 (11k)
Pricing
Free + IAP
Free + IAP
Category
Education
Education
Released
13.4y ago
10.4y ago
Verdict: Duolingo: Language Lessons earns more — an estimated $3.5M–$12M/mo, versus $3k–$16k/mo for Solar Walk 2 Ads+：Solar System.