VoiceBrief - Turn any PDF into an AI audio lecture you can listen to anywhere 🎧

Hey Product Hunt! 👋

I built VoiceBrief to solve a problem I had as a student - textbooks are dense, time is limited, and I wanted to learn while commuting, working out, or doing chores.

What is VoiceBrief?

Upload any PDF (textbook, research paper, lecture notes) and get:

- 📝 AI-generated summaries

- 🎙️ Natural-sounding audio narration (10-min quick summary)

- 🎓 Full professor-style explanations (1+ hour deep dives)

- ❓ Quiz questions with spaced repetition

- 🔖 Bookmarks and text highlighting synced with audio

- 💾 Offline MP3 downloads

Why I built this:

NotebookLM is great for quick overviews, but students need FULL lectures, not just 15-minute summaries. I wanted something that:

- Lets you follow along with sentence-by-sentence text highlighting

- Works offline (download MP3s)

- Has active learning tools (quizzes, bookmarks)

- Focuses on single-document deep learning vs multi-doc research

What makes it different:

✅ Two audio modes: Quick summary OR full-length lecture (your choice)

✅ Visual + audio sync (see exactly where you are in the text)

✅ Quiz generation for active recall

✅ Built for students who learn on-the-go

Current status:

- 🎉 115+ users

- 🆓 Free tier: 3 PDFs, 10-min previews

- 💎 Pro: Unlimited PDFs, full-length lectures

- 🚀 Mobile app coming Q2 2025

I'd love your feedback on:

1. What pricing would be fair? ($5? $10? $15/month?)

2. What features are missing for you?

3. Would you use this for work/study?

Built this solo as a bootstrapped side project - would love your support! 🙏

Try it free: voicebrief.io