A native Mac editor for text, CSVs, and data files
AI UX intelligence system for product designers and founders
Stage
Not given
Startup
Founded
Not given
2025
Based in
US
IN
Pricing model
Freemium
Freemium
Pricing
Caxton Free (free forever); Caxton Pro monthly at $9.99 USD, annual at $99.99 USD, or lifetime at $179.99 USD. Team pricing starts at $79 to $99.99 USD per seat per year.
Free: $0/month with 100,000 tokens (about 15 questions or 3 screen reviews). Pro Quarterly: $57 billed quarterly (about $19/month) with 1.9 million tokens (about 215 questions or 70 screen reviews). Pro Yearly: $131 billed yearly (about $10.92/month) with 1.9 million tokens.
Key features
Text editing with memory-mapped files for large documents
CSV and TSV table editing with column transforms
Column transformations and data type preservation
CSV validation with structural and data rules
File comparison without copying data
Extract matches and columns to new documents
Local processing with no cloud uploads or telemetry
Ask UX questions and get answers citing verified guidelines
Audit screens measuring contrast, tap targets and text sizes from pixels
Library of 50 free UX laws and guidelines
Multiple AI model comparison for design analysis
UX prompt optimization
Unified consensus on design decisions
Projects that remember product context
Every finding cites its source guideline
Access to Claude Opus 5, Gemini Pro and Deep Research on Pro plans
What makes it different
Opens files directly from disk without importing or uploading, preserving data exactly as stored
Combines text editor, CSV table editor, and log viewer in one native Mac application
Handles multi-gigabyte files with consistent performance and one-millisecond keystroke latency
Preserves leading zeros, long IDs, and data types exactly as stored in the file
All files stay local to your Mac with no cloud processing, telemetry, or vendor lock-in
Every finding cites a verified guideline, not an opinion or guess
Measures what it claims using pixel-level data, not guesses
Built by certified UX professional with 19 years of practice
Answers backed by universal UX/UI/CRO principles and human psychology research
Instant feedback at every stage instead of waiting days for design reviews
Caxton
ProUX