The zero-knowledge AI journal with on-device AI that reads what you wrote and reflects on it, keeping your words on your phone.
Stage
Not given
Startup
Founded
Not given
Not given
Based in
Not given
MT
Pricing model
Not given
Freemium
Pricing
Free plan with ~20 AI generations per month, 1 tab, 3 snippets, and 3 variables. Pro at $9/month (or $7/month billed annually) with unlimited tabs, snippets, variables, and larger AI budget. Business at $15/seat/month (or $12/seat/month billed annually) with shared team snippets, team management, an
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.
Key features
Multi-line code editor with syntax highlighting and auto-indentation
Global variables using @@ notation that update across all formulas
Excel to Google Sheets formula translator
Visual formula builder for no-code formula creation
AI assistant for generating, debugging, and explaining formulas
Reusable snippet library with team sharing on Business plan
Find and replace within formulas
Auto-suggest for formula functions and range names
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
What makes it different
Multi-line editor makes formulas readable like code instead of squished one-liners
Global variables that update 500+ formulas instantly when changed
Seamless Excel to Sheets translation without rewriting formulas from scratch
AI assistant specialized for spreadsheet formulas, not generic chatbot
Team snippet library for approved, audited formulas shared across organization
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
Formula Foundry
CortexOS