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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Why our flashcards work better
FSRS Algorithm
The Free Spaced Repetition Scheduler models your personal memory, achieving up to 95% retention with fewer reviews.
Rich Media formatted
Add images, audio, math formulas (LaTeX), and rich formatting to your cards.
Cross Device Sync
Study on your phone during your commute and pick up right where you left off on your desktop.
Ready to remember forever?
Everything you need to master your cards
Powerful tools working behind the scenes to optimize your study routine.
Customizable Intervals
Fine-tune your retention goals. Tell Burbly if you need 90% or 95% retention, and the algorithm adapts your intervals automatically.
Study smarter, not harder
Stop wasting time reviewing cards you already know. Burbly targets your weak points so every minute counts.
- Focus strictly on cards you are about to forget
- Track your mature vs learning cards
- Visual breakdown of your daily review burden
Keyboard Shortcuts for Flow State
Keep your hands on the keyboard. Rate your cards lightning fast so you can burn through your daily review queue in record time.
- Space to flip, 1-4 to rate
- Undo functionality for accidental swipes
- Keyboard support across both web and native apps
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.