Web 2024
Spaced Repetition Extension
Productivity & Learning Tool
Developed a comprehensive Chrome Extension using Manifest V3 that helps users learn and retain information using the scientifically-proven SM-2 algorithm. Offers 20+ premium productivity features completely for free.
20+
Premium Features
SM-2
Algorithm
Free
Cost
01
The Challenge
Building a production-grade browser extension with Manifest V3 constraints, implementing complex algorithms client-side, and providing enterprise-level premium features for free without backend bloat.
02
The Solution
Built with Chrome Manifest V3 APIs and standard web technologies to implement the SM-2 algorithm directly on the client side.
Technology Stack
Chrome Extension Manifest V3
JavaScript
SM-2 Algorithm
03
Architecture
- Manifest V3 compliance
- Client-side SM-2 algorithm
- IndexedDB for local storage
- Chrome Storage Sync for cross-device
- Message passing between content/background scripts
- Declarative content scripts
- Client-side encryption
- Modular React components
- State management with React Context
04
Key Features
01
SM-2 spaced repetition algorithm implementation 02
20+ free premium productivity features 03
Cross-device synchronization 04
Custom card deck organization 05
Smart notifications for review reminders 06
Dark/light theme support 07
Export/import functionality 08
Keyboard shortcuts for power users 09
Performance dashboard with stats 10
Client-side encryption for privacy 11
Offline-first architecture 05
Results & Impact
- Implements scientifically-proven SM-2 algorithm
- Offers 20+ premium productivity features for free
- Built entirely on the Manifest V3 architecture