Good, But Too Intimidating.

Didactically it is very well done. But whether you would like to have in your pocket a Prussian school teacher with birch-rods, that via e-mail & AirDrop will call you in unseasonable hour (especially at the nighttime and in the early morning) to proceed with your lessons? And this teacher is willing to follow you up very closely. I uninstalled.

Catchalove about Babbel – Learn English, v4.3.3