duolingo.comは安全ですか？

100% secure, malware-free website. 100% child friendly website. Type of website: Education, language learning.

Good, but getting worse: I've been using Duolingo for years and it's everything it says it is (although "The world's BEST way to learn a language" might be pushing it). They make their money from ads and from users paying for an ad free Duolingo Plus. Unfortunately, their communication is terrible unless you pay money, and the site has slowly become more greedy and less educational. Get what you can while the getting's good.

Dulingo is without doubt one of the best online language ressources. However, it has become more and more commercial; and it is intransparent concerning the subscription prizes, instead giving multiple "trial" offers. As Duolingo doesn't disclose the pricing beforehand, I do consider this predatory marketing. Which is a shame, the product's worth its prize.