The zero-knowledge AI journal with on-device AI that reads what you wrote and reflects on it, keeping your words on your phone.
A calm, private habit and mood tracker
Stage
Startup
Not given
Founded
Not given
Not given
Based in
MT
Not given
Pricing model
Freemium
Freemium
Pricing
Free: 10 encrypted entries per month. Premium Monthly: $7.99/month. Premium Annual: $49.99/year. Lifetime: $99.99 one-time purchase. All paid plans include a 7-day free trial.
Free plan at $0 includes up to 3 active tracking items, end-to-end encryption, mobile responsiveness, device sync, import/export backups, and dark mode. Pro plan at $29.99/year ($2.50/month) adds unlimited tracking items, custom labels and colors, advanced analytics, priority support, and early acce
Key features
On-device Llama 3.2 language model with no cloud calls
20+ emotion detection with intensity scoring
Deep Analysis: multi-paragraph AI reflections connecting to past entries
Cognitive distortion alerts based on CBT principles
On-device voice transcription with OpenAI Whisper
Zero-knowledge cloud vault with AES-256-GCM encryption
Memory layer that learns your patterns over time on-device
Behavioral pattern detection and cognitive pattern naming
7-day chapters that automatically organize journaling into narrative arcs
Therapist PDF reports for sharing with mental health professionals
Track activities and moods to discover patterns between what you do and how you feel
View streaks, consistency, and progress trends for each habit
Monthly, weekly, and yearly views to track at any scale
Customize tracking with unique icons and colored labels
Optional end-to-end encryption for data privacy
Export data to JSON and import backups
Responsive across all devices including mobile
Dark mode support
Sync across devices
Set goals for activities to stay on track
What makes it different
Only journaling app combining zero-knowledge encryption with on-device AI analysis
Open-source cryptographic core published under MIT license on GitHub
AI runs entirely on-device with zero network calls for data processing
Recovery phrase creates permanent data deletion if lost, proving zero-knowledge works
Optional end-to-end encryption keeps your personal data private and only accessible to you
Desktop-first design with distraction-free interface
Discover patterns between your activities and how you feel
Free plan includes end-to-end encryption with no credit card required
CortexOS
Habitflow