This is another useful study tool I’ve developed a prototype for. As is evident from the image, it uses the same general base as the translation tutor app.
Rather than being a translation tutor, this tool utilises an LLM to generate passages of text that are constrained to grammar and vocabulary not exceeding the selected JLPT level. It will then ask a question about the passage and provide multiple choice answer buttons. Upon clicking a button for your choice, it’s tells you if it was correct/incorrect and provides a brief explanation before automatically loading the next passage of text.