h7-v/japanese-full-sentence-trainer

Japanese Full Sentence Trainer is a local practice app for learning to translate full English sentences into Japanese, rather than just filling in blanks. It shows you an English sentence, you type your Japanese translation, and a connected AI model checks whether your answer is correct, close, or wrong. You do not need any programming tools to use it. If you download the packaged release, you can run the app without Node.js, npm, Git, or a terminal. Downloading the release, unzipping it, and double clicking a start file is enough to get the app running in your browser. Sentences to practice with can come from several sources. You can import your own vocabulary and example sentences from Anki decks, from Bunpro grammar sets, or from a CSV spreadsheet file. There are also built in demo sentences if you just want to try the app quickly without setting up any imports first. To grade your answers, the app needs access to an AI model through an API key. You can choose a local, privately run model, or a hosted option like OpenAI or Gemini. The README points out that hosted providers have their own rules about age, region, and paid usage, and that using a free quota is not guaranteed to be appropriate for every situation, so it is worth checking the current terms of whichever provider you pick before relying on it. Once set up, you type your Japanese answer for each prompt, get feedback, and can turn on grammar hints if you want extra help understanding a sentence. The app also lets you filter which sentences show up during practice by source, grammar level, or imported deck, and keeps track of how many questions you have answered correctly in the current session, without counting a retry of the same question twice.