Your voice.
Your twin.
A private AI voice diary that listens, understands, and builds a digital version of your personality. Everything stays on your device.
How It Works
Three steps. Two minutes.
Zero typing.
Speak
Press record and talk about your day. No prompts, no rules. Just say what's on your mind.
AI Analyzes
On-device AI transcribes your voice, detects mood, and extracts the people and topics you mention.
Twin Learns
Your Digital Twin builds a personality model over time — predicting moods and surfacing hidden patterns.
Features
Everything you need.
Nothing you don't.
Voice Journaling
Speak naturally. On-device transcription turns your voice into text instantly.
Digital Twin
A living model of your inner world. Predicts mood and learns your emotional rhythms.
Smart Insights
Mood trends, sentiment analysis, and AI-generated weekly insight cards.
Personality Card
A shareable snapshot of who you are. Spotify Wrapped for your mind.
Face ID Lock
Biometric security. Your diary stays yours.
Works Offline
No internet needed. Everything runs on your iPhone's Neural Engine.
speaking vs 40 typing
captures a full diary page
detected automatically
No in-app purchases.
Digital Twin
An AI that becomes
you.
Your personality, quantified
After 30 days of entries, your Digital Twin generates a personality card — communication style, emotional range, thinking patterns. Spotify Wrapped for your inner world.
See tomorrow's mood today
Your Twin learns your emotional rhythms — weekly cycles, seasonal patterns, trigger correlations. It predicts how you'll feel before you feel it.
A digital version of yourself — private, on-device, yours
Every voice entry teaches your Digital Twin more about how you think, feel, and react. The long-term goal: an AI that can act like you, speak like you, respond like you. Not on a server. Not in the cloud. On your phone, for your eyes only. This is what personal AI should be.
I started missing days. Then weeks. Writing every day had become a chore. Then I tried speaking instead of writing — and it worked. So I built DailyVox. An app where you just talk, and AI handles the rest. Everything stays on your phone. No servers. No cloud. No catch.
Compare
How DailyVox stacks up
| DailyVox | Day One | Reflectly | Apple Journal | |
|---|---|---|---|---|
| Price | Free | $34.99/yr | $59.99/yr | Free |
| Voice Journaling | ✓ | ✕ | ✕ | ✕ |
| AI Mood Detection | ✓ | ✕ | ✓ | ✕ |
| Digital Twin | ✓ | ✕ | ✕ | ✕ |
| Works Offline | ✓ | Partial | ✕ | ✓ |
| Data Collected | None | Yes | Yes | Minimal |
| Account Required | ✕ | ✓ | ✓ | ✕ |
Privacy is the foundation.
No servers. No accounts. No tracking. No ads. No third-party SDKs. Your voice, your entries, and your Digital Twin never leave your device.
From the Blog
Journaling, privacy & on-device AI
The ADHD Voice Journaling Protocol
Speaking is 3x faster than writing. A protocol designed for brains that think fast.
April 1, 2026 WellnessThe Science of Talking to Yourself
Affect labeling, vagus nerve activation — the neuroscience behind voice journaling.
April 1, 2026 GuideFree Journal Apps That Stay Free
Tired of "free" apps that lock features behind $60/year? Here are the real ones.
April 1, 2026Start talking.
Stop typing.
Two minutes a day. No writing. No subscription. No data collection. Just you and your voice.
Download Free on App Store