Speak for 42 seconds. Watch your words become stars.
The free voice journal with on-device AI and a Digital Twin that learns who you are — entirely on your iPhone.
Free forever · 100% on-device · ⭐️ 5-star rated · 500+ downloads, growing ~50% week-over-week · 🚀 live on Product Hunt
DailyVox turns your spoken thoughts into a constellation of stars. Every journal entry becomes a point of light in your inner sky — mood-colored, connected by patterns only you can see.
Behind the scenes, an on-device Digital Twin learns how you think, how you feel, and who matters to you. It predicts your mood, answers questions about your patterns, and reveals meaning across months of entries. No accounts. No servers. No data collection.
Your thoughts never leave your device. Ever.
| DailyVox | Most Journal Apps | |
|---|---|---|
| Price | Free forever | $35-50/year |
| AI processing | 100% on-device | Cloud servers |
| Account required | No | Yes |
| Data collection | Zero | Analytics, text, usage |
| Works offline | Fully | Partial or none |
| Digital Twin | Yes | No |
| Voice-first | Yes (offline) | Text-first or cloud |
Every entry becomes a mood-colored star. Gold for positive, sage for calm, blue for reflective, coral for stressed. Over time, your constellation reveals patterns — clusters around topics, connections between feelings, an inner sky that's uniquely yours.
Four on-device AI models build a private mirror of your personality:
- Mind — communication style, vocabulary, reasoning
- Heart — emotional signature, sentiment arc, mood triggers
- Voice — speech patterns, pacing, tone
- Graph — people, places, topics, and how they connect
Ask your Twin questions. It answers from your history, running entirely on your iPhone's Neural Engine.
Speak at 150 words/minute instead of typing at 40. No blank page anxiety. DailyVox transcribes on-device using Apple Speech — no internet required.
Automatic sentiment analysis on every entry. Trends across days, weeks, and months. Your Twin predicts tomorrow's mood based on your patterns.
Zero network calls. Zero third-party SDKs. Zero analytics. Apple's strictest privacy label: "Data Not Collected." Your journal is encrypted on-device. Optional iCloud sync uses your personal account with Apple's end-to-end encryption.
- Biometric lock — Face ID / Touch ID
- Photo attachments — up to 5 per entry, stored locally
- Encrypted exports — PDF, JSON, Markdown, CSV, AES-256 backup
- Widgets — Home Screen & Lock Screen for streaks and quick recording
- Siri Shortcuts — "Hey Siri, open my journal"
- Journaling goals — weekly targets with milestone celebrations
- 4 themes — System, Ivory, Light, Dark
| Layer | Technology |
|---|---|
| Language | Swift, SwiftUI |
| Data | Core Data + CloudKit (optional iCloud sync) |
| AI/NLP | Apple NaturalLanguage (NLTagger, NLEmbedding) |
| Speech | Apple Speech (SFSpeechRecognizer, on-device) |
| ML | Neural Engine via CoreML |
| Minimum | iOS 17.0+ |
| Devices | iPhone, iPad (Universal) |
- Voice-first onboarding — speak your first star during onboarding; your own words, kept private, become your first real entry
- Warm ivory-light onboarding redesign with an optional name step
- Widget & Live Activity fixes — accurate entry counters, no more repeated star-birth banners
- Built on v1.4.0's warm sage-and-gold redesign with the Digital Twin front and center
Full changelog · Try the interactive demo
| Version | Focus | Status |
|---|---|---|
| v1.0 | Core voice journal + Digital Twin | Shipped |
| v1.1 | Twin Predictions + Shareable Cards | Shipped |
| v1.2 | Ask Your Twin (chat) | Shipped |
| v1.3 | Constellation Update | Shipped |
| v1.3.5 | Dynamic Island + New Icon | Shipped |
| v1.4.0 | Warm redesign — Digital Twin moved to center | Shipped |
| v1.4.1 | Voice-first "Speak your first star" onboarding | Shipped |
| v1.5 | Body Twin — HealthKit + Apple Watch | Up next |
| v1.5.5 | Ambient Signals — on-device photo + music context | Planned |
| v1.6 | Semantic Memory & Measurable Fidelity | Planned |
| v1.7 | Foundation Models Twin — on-device LLM chat | Planned |
| v1.8 | Multi-Language (Tamil, Kannada, Hindi, Spanish, Japanese, German first) | Planned |
| v2.0 | Apple Intelligence Native (Siri AI, iOS 27) | Planned |
Beyond v2.0: Personality Depth, Agentic Twin, Ambient Twin, the open Twin Protocol, and the DailyVox Mirror device. iPhone-only by conviction — the phone is the Twin's body, and every feature works end-to-end on the phone alone (no Mac or second computer, ever); portability lives in the data (Twin Protocol), not in platform ports — full roadmap
Is DailyVox really free?
Yes. No subscriptions, no in-app purchases, no ads. MIT licensed. Free forever.Does it work without internet?
Yes. Every feature — voice transcription, AI analysis, Digital Twin — works fully offline.Where is my data stored?
On your device in an encrypted Core Data store. Optional iCloud sync goes through your personal iCloud account (end-to-end encrypted by Apple). DailyVox never has access.What is the Digital Twin?
An on-device AI model that learns your personality, communication style, emotional patterns, and life themes from your journal entries. It runs entirely on your iPhone's Neural Engine. You can chat with it, ask about your patterns, and get mood predictions.Does DailyVox collect analytics or telemetry?
No. Zero data collection of any kind. No analytics SDKs, no crash reporting services, no telemetry. Verified by Apple's privacy label.Can I export my journal?
Yes. PDF, JSON, Markdown, CSV, or AES-256 encrypted backup.I've written a diary every day for 20 years. The problem was always the same — by the time I sat down to type, half the details were gone. Voice changes that. You speak at 150 words a minute without filtering yourself.
But every voice diary app I tried wanted to upload my recordings to their servers. That was a deal-breaker. So I built DailyVox — a voice journal where everything runs on-device, and the AI that knows you best is the one that never shares you with anyone.
The constellation metaphor came from staring at my own journal entries — hundreds of days, each one a tiny light. Together they form patterns. DailyVox makes those patterns visible.
DailyVox is open source (MIT) and built solo, in the open. If the mission — a personal AI that's private by construction — resonates, here's how to help:
- ⭐ Star this repo — the simplest way to help others find it
- 🚀 Upvote on Product Hunt — we just launched
- 🛠️ Contribute — issues and PRs welcome. Start with CONTRIBUTING.md and ARCHITECTURE.md
- 🗣️ Try it and tell me what's missing — download free or explore the interactive demo
It's a genuinely fun codebase to hack on: 100% on-device AI, SwiftUI, a Canvas-rendered constellation, and a Digital Twin engine — no backend to spin up, no API keys, just clone and run.
| App Store | Download DailyVox Free |
| Website | getdailyvox.com |
| Blog | getdailyvox.com/blog |
| Privacy Policy | getdailyvox.com/privacy |
| Press Kit | getdailyvox.com/press |
| Contact | [email protected] |
DailyVox is and will always be free. No subscriptions, no in-app purchases, no ads.
Download it today.