Trusted by learners worldwide
Burbly completely changed how I study for boards. The spaced repetition is genuinely different from anything else I've tried—I'm retaining way more with way less time. I passed Step 1 with a score I'm proud of.
Sarah M.
Medical Student, Class of 2026
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Measure what matters
Retention Forecasts
See exactly how many cards you will need to review tomorrow, next week, and next month.
Heatmaps
Visualize your daily review activity similar to GitHub contribution graphs to keep your study streak alive.
Deck Mastery
Track the ratio of mature vs. learning cards in any given deck at a glance.
Ready to track your mastery?
Insights that improve your strategy
Understand your memory to study more efficiently.
Time Tracking
See exactly how many minutes you spend per card and per deck to identify bottlenecks in your learning.
Identify your weak points instantly
Our analytics engine highlights the specific tags or card types that consume the most of your time, allowing you to rewrite them or create better mnemonics.
- Filter reports by tag or subdeck
- Export data for custom visualization
- Compare performance over different months
Everything you wanted to know about Burbly
Burbly combines the gold-standard FSRS spaced repetition algorithm with AI-powered deck generation, social challenges, and real-time analytics—all in a polished, modern app. Unlike Anki, there's no steep learning curve. Unlike Quizlet, your review schedule is adaptive and scientifically optimized, not just a simple timer.
FSRS (Free Spaced Repetition Scheduler) is the most accurate open-source memory algorithm available. It models your personal forgetting curve for each card and schedules reviews at precisely the right time—maximizing retention while minimizing total study time. Burbly uses FSRS so you study smarter, not harder.
Yes. Burbly's AI understands context, not just keywords. It generates cards with clear questions, concise answers, and useful hints—not just copy-pasted text. You can always edit, delete, or add cards after generation, giving you full control over your deck quality.