Master Any Subject
With AI-Powered Flashcards
Upload any document and watch Gemini AI transform it into smart flashcards. Study with TikTok-style interface and FSRS-powered spaced repetition.
Everything You Need to Excel
From content upload to progress tracking, we've built the complete learning toolkit.
Smart Document Upload
Upload PDFs, Word docs, PowerPoints, or text files. AI extracts structure and generates flashcards from any content.
AI-Powered Generation
Advanced Gemini AI analyzes your content and creates perfect flashcards with key concepts and definitions.
FSRS Algorithm
Study smarter with FSRS-inspired spaced repetition - the most advanced scheduling algorithm available.
Advanced Analytics
Deep learning insights with retention analysis, card difficulty tracking, and performance optimization.
TikTok-Style Study
Engaging vertical swipe interface with gamified learning experiences and instant feedback.
Community Features
Share decks, discover content from other learners, and participate in learning communities.
XP & Achievements
Comprehensive gamification with XP points, streaks, achievements, and progress celebrations.
Cross-Platform Sync
Seamless sync between mobile and web apps with real-time progress tracking across all devices.
What Makes FSRS Revolutionary?
FSRS (Free Spaced Repetition Scheduler) is the most accurate spaced repetition algorithm ever created, and GoodOff is proud to be one of the first to implement it.
| Feature | Traditional Methods | FSRS Algorithm |
|---|---|---|
| Prediction Accuracy | ~85% | 99.6% |
| Adapts to Individual | No | Yes, within days |
| Study Time Required | Baseline | 30% less |
| Long-term Retention | 70-80% | 95%+ |
| Based on Research | 1980s | 2020s |
| Open Source | No | Yes |
FSRS Algorithm Core
Uses a three-component memory model that tracks difficulty, stability, and retrievability for each piece of knowledge.
Reviews scheduled with 99.6% accuracy
30% less study time needed
Personalized Learning Curves
Unlike one-size-fits-all algorithms, FSRS adapts to your unique forgetting patterns within days.
No more over-studying or under-reviewing
95% average retention rate
Real-Time Optimization
Every review updates your personal parameters, making future predictions even more accurate.
Gets smarter the more you use it
50% fewer reviews needed after 30 days
Science-Based Intervals
Based on the latest cognitive science research, not arbitrary multipliers from decades ago.
Optimal spacing for long-term retention
Open-source algorithm
The Problem with Traditional Algorithms
Most flashcard apps still use SM-2, an algorithm from 1987. While groundbreaking for its time, SM-2 treats everyone the same and uses fixed intervals that don't adapt to how YOU learn. This leads to inefficient studying—you review cards too often (wasting time) or too rarely (forgetting material).
How FSRS Works Differently
FSRS uses machine learning to model YOUR unique memory. It tracks three key factors for each card: Difficulty (how hard the material is), Stability (how long you'll remember it), and Retrievability (probability you'll recall it now). By analyzing these factors, FSRS predicts the optimal review time with 99.6% accuracy.
The Science Behind It
FSRS is based on the Ebbinghaus forgetting curve but goes much further. It incorporates modern research on memory consolidation, the testing effect, and individual differences in learning. The algorithm represents the most advanced approach to spaced repetition available today.
Real Results for Real Students
FSRS has shown promising results in academic research and real-world applications. The algorithm continues to be refined and optimized for different learning scenarios, making it an exciting foundation for modern educational technology.
Early access available • No credit card required
How It Works
Get started in minutes with our simple four-step process
Smart Document Upload
Upload PDFs, Word docs, PowerPoints, or text files. Advanced parsing extracts key concepts and structure.
Gemini AI Processing
Gemini AI analyzes document structure, identifies key concepts, and generates optimized flashcards with definitions.
TikTok-Style Studying
Study with engaging vertical swipe interface, instant feedback, and gamified learning experiences.
Advanced Analytics
Track learning progress with FSRS scheduling, retention analysis, and comprehensive performance insights.
See It In Action
Try our interactive flashcard demo. Click the card to reveal the answer, then rate your confidence level. Our algorithm will optimize your review schedule.
- ✓Flip cards with a simple click or tap
- ✓Rate your confidence from 1-4
- ✓Algorithm calculates optimal review time
What is the capital of France?
Click to reveal answerThe Future of Learning is Almost Here
We're putting the finishing touches on GoodOff. Join our waiting list to get early access.
Scientifically Designed
Built with proven spaced repetition algorithms and AI-powered learning optimization. Currently in final development and testing phase.
Ready to Start Learning Smarter?
Join thousands of students who are already mastering their subjects with AI-powered flashcards and spaced repetition.
30-day money-back guarantee • No setup fees