Bias Daily
Learn one cognitive bias every day and improve your decision-making
An indie project built to make behavioral science practical for everyday decisions
Features
DebiasDaily
Discover a new cognitive bias every day, selected deterministically so everyone sees the same bias on the same date.
Privacy First
All your personal data stays on your device. Your biases, favorites, and progress are never sent to any server. We use privacy-focused analytics that doesn't collect personal information.
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 Sources
Research-Based Content
Content is distilled from standard cognitive science references (e.g., Kahneman & Tversky) and curated by the DebiasDaily team. Many biases include references to original studies and academic sources.
Transparent Sources
When available, biases include academic references and research level indicators to help you learn more.
Custom Biases
You can add your own custom biases to personalize your learning collection. These are stored locally on your device.
Content Coverage
This app features 50 cognitive biases, each with 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.
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
Public Stats
All data stays on your device. No tracking, no servers, no ads.
Made with care for better thinking
Version 1.0.0