#5
Babbel
Built by linguists. Yale study: 1 semester of Spanish in 12 weeks.
The Berlin-based app that takes a more traditional, structured approach than Duolingo. Babbel's courses are built by linguists and organized around practical conversation topics — ordering food, booking hotels, making small talk. It covers 14 languages and costs $7-13/month. Independent studies from Yale and City University of New York found Babbel users improved Spanish skills equivalent to a full college semester in just 12 weeks. It's less flashy but more substance.
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