“(unknown current hero — generic language-app pattern)”
"Learn a language online" describes the entire category. A visitor who googled "learn Spanish" sees this exact phrase on 20 competing pages. Nothing in the first viewport explains why Busuu exists alongside Duolingo, Babbel, and Rosetta Stone.
“Learn a language and get corrected by native speakers — not just an algorithm.”
Surfaces the one differentiator (human correction) in the hero. The contrast ("not just an algorithm") positions against every AI-only competitor in a single clause.