MirrorCaption - Live transcribe, translate and summarize, works in browser

Hey Product Hunt! 👋 I built MirrorCaption out of frustration. I kept losing the thread in multilingual meetings — scrambling to take notes, missing context, and getting buried in inaccurate auto-transcripts. Every tool I tried either required a desktop install, sent my audio to the cloud, or just... didn't work well enough. So I built the tool I actually wanted. What MirrorCaption does: 🎙️ Real-time transcription + translation — speaks your language, literally. Transcribes as you talk, translates on the fly, so you never fall behind. 🎧 Hybrid audio capture — mix your microphone and system audio simultaneously. Perfect for online meetings, lectures, or any content playing on your device. 🤖 AI summaries — when your session ends, get a (some) clean, structured summary automatically generated from the full transcript. 📖 Vocabulary glossary — terms you encounter get saved into a personal glossary. Great for language learners or domain-specific jargon in professional settings. 🧠 Meeting context & learning — add context to your sessions (project background, attendees, topic). The app learns from your meeting history to progressively improve translation accuracy and terminology over time. ✏️ Custom translation & refinement rules — define your own translation preferences and post-processing instructions. Your transcripts, your way. 🪟 Floating overlay (desktop) — keep a compact, always-on-top transcript window while you work in other apps. No alt-tabbing. 📱 Full mobile support + PWA — works seamlessly on phones and tablets. Install it as a PWA for an app-like experience. Traveling abroad? The face-to-face mode lets two people hold a real conversation across a language barrier using just one device. 🔒 Privacy-first, GDPR-compliant — your audio never leaves your device. Transcripts and session data are stored locally only. No cloud uploads, no data harvesting. --- Who it's built for: - Professionals navigating multilingual meetings - Language learners who want immersive, real-world practice - Travelers who need a reliable translation companion - Podcasters and researchers who need accurate transcripts fast Free tier: 2 hours/month, no credit card required. Just sign up and start. I've been using this daily and it's changed how I handle multilingual work completely. Would love to hear how it fits into your workflow — what would make it truly indispensable for you?