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 habit tracker with no streak counter. Grace days, weekly goals you set, and not one notification you didn't ask for.
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 forever with unlimited habits, week bar, year heatmap, month calendar, grace days, weekly goals, milestones, share cards, home-screen widget, backup file and CSV export, and access on phone and tablet in ten languages with no account required. Optional paid upgrade available as either a subscri
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
Grace days: monthly allowance that covers missed days without resetting the record
Weekly goals: set how many days a week a habit should happen, from one to seven
Week view with seven slots showing rate as a plain count
Milestones tracking days done without losing progress
No push notifications by default; reminders only when enabled per habit
Home-screen widget showing up to four habits for current week
Backup file and CSV export available anytime
Available in ten languages on phone and tablet
Device sync with paid upgrade via Apple or Google account
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
Grace days provide monthly slack so life's irregularity doesn't break habit tracking
Completely free with no ads, trials, or account required
CortexOS
Habenna