A man may spend considerable effort searching for a solution, only to discover that he has already built one and simply forgotten.
A Letter Arrives But The Post Office Is Closed
Note From Col. Watson: Today’s session sprang, not from design or ambition, but from a small disaster: Professor Higgins had gone silent.
My benfactor returned to his Norwegian studies after tea this afternoon only to find his trusted tutor unresponsive, dead upon the floor, with an unanswered submission strewn across his chest. The Doctor felt this loss all the more keenly, as the Professor’s question had touched on an area of thin vocabulary, and he was eagerly awaiting his tutor’s pointed feedback.
Higgins
Henry Higgins did not wait for Eliza Doolittle to ask for help. He simply kept correcting her until the problem was solved. This project takes the same approach.
Running on your own hardware, Higgins will interrupt you several times a day (over a messaging app of your choice) by sending a spontaneous conversational question in your target language. This is not some dry grammar exercise, but the kind of thing a curious and friendly stranger might actually ask at a dinner party. You respond when you can, and then Higgins will reply with a thumbs-up, or an improved version of your response, if one is necessary, and with errors clearly marked.