@Aurelie Delahalle I have some videos I had recorded for someone in my classroom, but shortly - it had a vast library of content with pinpointed text, can generate audio to what you paste there, tracks your progress etc, but it had been tested against many other apps and won (some 2-3 years ago, so things may have changed) - built in spaced repetition and all vocabulary is mine. It has many languages, I'm learning French 😄