Voice CBT diary with offline AI - Keep a CBT thought diary by voice, not by typing.

Hey Product Hunt 👋 I'm Pavel, the founder. Mentalium came out of my own story. A few years back I went through anxiety and depression, and what pulled me out was CBT — specifically the homework between sessions: catching an automatic thought the moment it hits and writing it down. The problem was I could never keep the diary. Notebook was never on me, typing a painful thought with my thumbs while shaking just doesn't happen, so I'd fill it in two hours before the session from memory — the one way it's guaranteed not to work. One day it hit me: I talk to myself in my head all day, but the moment I need to capture it I'm forced to type. So why not just say it out loud? That's Mentalium. You speak the five CBT questions like you'd vent to a friend, and an AI model running on your phone turns it into a structured entry in 1–2 minutes — in the car, in a queue, mid-panic. It runs on-device, so your voice and your darkest notes never touch a server, and it exports a clean report for your therapist in one tap. It's not a replacement for therapy — it's the between-sessions tool I spent years wishing existed. I'd love your honest feedback, especially if you've ever started a thought diary and quietly abandoned it. I'm here all day 🙏