The application plays the role of a true mentor, available at any time. It guides you, corrects you and adapts to your level in real time. The pedagogical principle is based on a simple observation, largely confirmed by research in the science of learning : the more the correction is frequent and immediate, more assimilation is easy and sustainable. A professor, as competent as it is, can correct a few dozens of attempts per session. The application corrects each attempt, without exception, without time — and it is this repetition corrected, accumulated over many days, that makes all the difference