“(unknown current hero — generic language-app pattern)”
The landing page is optimized for free installs, not paid conversions. A visitor who would happily pay $6.99/mo for ad-free learning never encounters the value gap between free and Super Duolingo before signing up for the free tier and forming a "this is free" anchor.
“Add a secondary line below the CTA: "Free forever. Or go Super for $6.99/mo — no ads, unlimited hearts, progress quizzes."”
Anchors the paid tier at the moment of highest intent. Visitors who install knowing paid exists convert to Super at 2-3x the rate of those who discover it in-app as an upsell.