There is nothing free about this app. It is free in the sense that a game demo is free.
This would have been acceptable if is was an unlock. But do not be mislead, the in-app purchases is not a once off like some greedy publishers. No, this is a monthly subscription - starting at 9.99.
That is utterly low and deceptive - why would I, and anyone else subscribe at that price? Especially since there was no warning of the subscription gate, and yet you got us sign up under the guise of allowing us to save progress. What progress - its one short lesson - and now what?
Sir Damato III about Babbel – Learn French, v5.4