While I can't vouch for voiczy, Duolingo is in the business of user retention and engagement in order to meet investor demands...language learning is the hook.
Duolingo is notably POOR at real language acquisition.
Duolingo is notably POOR at real language acquisition.
We’ve seen excellent improvement with our son using Voiczy daily. Of course, we know we’re not perfect. We're just a small parent-run company. It’s just me, my partner, and our son, who happens to be our main tester! :)