The zero-knowledge AI journal with on-device AI that reads what you wrote and reflects on it, keeping your words on your phone.
Habit tracker, AI calorie counter and daily planner in one app
Stage
Startup
Startup
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 core app with 3 free AI actions total (photo scans, voice meal logs, AI meal plans in any combination). Tracck Pro subscription available with unlimited AI features.
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
Habit streaks and reminders
AI photo and voice meal logging
Calorie and macro tracking
AI-generated meal plans
Task planning with projects
Progress charts and analytics
Focus sessions
Daily heatmap for habits
Customizable modules
Voice meal logging
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
One app combining habits, calories, and tasks instead of three separate apps
Modular design lets you use only the features you need
AI automatically logs meals from photos with no database scrolling
Connected view of habits, meals, and tasks on same day
Forgiving streak logic that doesn't erase progress on one missed day
CortexOS
Tracck