JustLearn

AI-powered Chinese learning platform for learners and organizations — voice conversations with AI tutors, per-sentence pronunciation scoring, HSK 1-6 courses, spaced-repetition vocabulary. Tukera is an AI-powered platform for learning Mandarin Chinese, built for learners who want to actually speak the language — not just tap through flashcards. Talk with AI tutor personas in free-form voice conversations and get real-time pronunciation scoring on every sentence. Follow structured HSK 1-6 courses that combine bilingual texts, grammar explanations, and interactive exercises. Build lasting vocabulary with spaced repetition. Stay motivated with streaks, leaderboards, and badges — the interface supports 11 languages. Schools, universities, and companies can run Tukera as an organization workspace: invite members, assign seats, fork HSK courses, and manage tenant-level vocabulary packs.

AI language coach for real out-loud conversation practice, starting with Spanish and Portuguese. When you freeze mid-sentence, it switches to English, teaches the missing phrase, and hands the conversation back. Free 14-day trial, no credit card. VoiceLearn is an AI language coach that runs real spoken conversations — order a coffee, book a table, ask for directions — starting with Spanish and Portuguese. How it works: the coach asks one question at a time with two options when you're stuck. When you freeze mid-sentence, it switches to English, teaches the exact phrase you were reaching for, and returns you to the conversation. Every phrase comes with pronunciation guides and explanations of common mistakes English speakers make. The product runs in a phone browser — no app install required. A 14-day free trial includes 30 minutes of practice time and no credit card. After the trial, Pro is $9.99/month for 75 voice minutes.

Translate EPUB books and download translated or bilingual editions Epub Translator is an online service for translating complete EPUB books while preserving their chapter structure, images, styles, and table of contents. Users can preview a translated excerpt for free, request a fixed quote for a whole book, and download translated-only and bilingual EPUB editions. It supports 41 target languages and uses a book-wide glossary and chapter summaries to help maintain terminology and context. Depending on the book, payment is due either before translation or after completion.

Language-learning app with AI conversation practice, translation, and team learning tools. PolyChat is a language-learning app and AI-powered translator for learning and practicing 17 languages. It offers structured CEFR-aligned lessons, real-dialogue exercises, interactive games, AI conversation practice, and customizable lessons, with access on iOS, Android, and the web. PolyChat also provides a business offering where teams can use industry-specific language packs and optionally commission learning content based on their company materials.

YouTube & Netflix dual subtitles with context-aware AI translation for language learning. LingTube is an AI language learning Chrome extension that adds dual subtitles (bilingual subtitles) to YouTube and Netflix. Instead of translating words like a dictionary, it translates each word and phrase using the subtitle line it appears in and its part of speech, so learners get the meaning used in that sentence. Subtitles are automatically tagged by part of speech, with furigana for Japanese and pinyin for Chinese. Learners can get a grammar breakdown of any sentence, and saved words are tagged with an estimated CEFR level. For YouTube videos without captions, LingTube transcribes the audio with AI and translates it. It also generates video summaries, outlines and mind maps, and answers questions about the video with clickable timestamps. To practice, learners can shadow each subtitle line with waveform comparison, listen to an AI voice-over of the translation, and review saved words and sentences or export them to Anki. LingTube is also social: learners can write timestamped notes and share them on the video's progress bar, and chat through danmaku (scrolling comments) on both YouTube and Netflix. YouTube chapters, thumbnail previews, the most-replayed heatmap and Shorts keep working in study mode. LingTube supports 8 learning languages and more than 10 native languages.

AI-powered Chrome plugin for respectful and clear communication. RespectablyAI is a Chrome plugin that uses AI to analyze the tone of your text, ensuring your messages are respectful and clear. It leverages the ChatGPT API to perform real-time content review, identifying potentially offensive, racist, sexist, or non-inclusive phrases. It also offers alternative suggestions to maintain the essence of your communication without crossing any lines. The plugin aims to foster a digital culture that values empathy, respect, and understanding.