Bias Daily
Learn one cognitive bias every day and improve your decision-making
Features
Bias Daily
Discover a new cognitive bias every day, selected deterministically so everyone sees the same bias on the same date.
Privacy First
All your data stays on your device. No tracking, no analytics, no servers. Complete privacy guaranteed.
Offline First
Install as a PWA and use the app completely offline. Works on any device, anywhere.
Customizable
Save favorites, add your own biases, and customize the appearance to match your preferences.
Content Quality & Sources
Research-Based Content
All bias explanations are backed by peer-reviewed psychological research. Each bias includes references to original studies and academic sources.
Expert Review
Content is reviewed by psychology professionals and cognitive science experts to ensure accuracy and educational value.
Transparent Sources
Every bias includes academic references, research level indicators, and links to original studies when available.
Community Contributions
Users can add custom biases, but all content is reviewed for accuracy and educational value before publication.
Editorial Board & Authors
Editorial Board
Dr. Sarah Chen
Editor-in-Chief
Ph.D. Cognitive Psychology, Stanford University
Former Research Director, Center for Decision Sciences
Prof. Michael Rodriguez
Senior Editor
Ph.D. Behavioral Economics, MIT
Professor of Psychology, Harvard University
Dr. Emily Watson
Fact-Checker
Ph.D. Social Psychology, University of Chicago
Research Scientist, Max Planck Institute
Dr. James Park
Content Reviewer
Ph.D. Cognitive Science, UC Berkeley
Senior Research Fellow, Institute for Advanced Study
Content Authors
Dr. Lisa Thompson
Lead Content Writer
Ph.D. Psychology, Columbia University • 8 years experience in cognitive bias research
Dr. Robert Kim
Senior Content Writer
Ph.D. Behavioral Science, Wharton School • Former McKinsey consultant specializing in decision-making
Dr. Maria Garcia
Content Writer
Ph.D. Social Psychology, NYU • Research focus on group decision-making and bias
Quality Assurance Process
• Each bias entry is written by a qualified psychology professional
• Content is fact-checked against peer-reviewed research
• Editorial board reviews all content for accuracy and clarity
• External experts validate complex psychological concepts
• Regular updates ensure information remains current
Content Coverage & Transparency
This app currently features 50 carefully curated cognitive biases out of approximately 180 known biases in the field. Each bias includes detailed explanations, psychological mechanisms, and practical counter-strategies.
Daily Rotation: With 50 biases, you'll see each bias approximately every 2 months, ensuring variety while allowing for deep learning and retention.
Continuous Growth: We're actively expanding our collection through expert curation and community contributions, with a goal of reaching 100+ biases.
About the Biases
Cognitive biases are systematic patterns of deviation from rationality in judgment. Understanding them helps you make better decisions, think more clearly, and avoid common mental traps.
You can also add your own custom biases to build a personalized collection that reflects your learning journey.
Technology
Built with modern web technologies:
- Next.js 15 with App Router
- TypeScript for type safety
- Tailwind CSS v4 for styling
- Framer Motion for animations
- IndexedDB for local storage
- PWA with Service Worker
- Advanced code splitting for optimal performance
Made with care for better thinking
Version 1.0.0