Duolingo: Language Lessons vs Guernsey Theory Test Suite
A data-backed head-to-head — estimated revenue, downloads, ratings and pricing side by side, from live App Store signals. Updated continuously.
Revenue / mo
$24M–$97M
$0
Downloads / mo
3.5M–15M
0
Rating
★ 4.72 (46M)
★ 5.00 (—)
Pricing
Free + IAP
Paid $17.99
Category
Education
Education
Released
13.1y ago
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