Remember
Everything
Forever.
Memo uses the SM-2 spaced repetition algorithm to schedule reviews at the exact moment you need them. Learn languages, ace exams, master any subject — in 24 languages.
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SRS Algorithms
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Study Modes
Everything You Need
Designed for deep recall
Every feature is built around one goal: helping you remember more with less time.
Spaced Repetition (SM-2)
The proven SM-2 algorithm automatically schedules cards at the optimal moment — right before you forget them. Science-backed, not guesswork.
Beautiful Custom Decks
Create decks with 10 accent colors, 20 emoji icons, and custom descriptions. Your study space should feel like yours.
3D Flip Card Experience
Cards flip with a satisfying 3D animation. Front, back, hints — immersive study that keeps you engaged session after session.
Tags, Hints & Rich Content
Tag cards for easy filtering. Add hints that appear before the answer is revealed — perfect for guided recall and layered learning.
3 Intelligent Study Modes
Due Only (review overdue cards), All Cards (full deck practice), New Only (introduce fresh material). You control the pace.
24 Languages, Full RTL
Study in Arabic, Persian, Hebrew, Japanese, and 20 more languages. Fully RTL-aware UI — no awkward layouts for any script.
Simple Process
Start studying in 3 steps
No configuration needed. Create, add cards, and the algorithm takes care of the rest.
Create Your Deck
Name your deck, pick an accent color and emoji icon. Organize by subject — Japanese N5, Biology, System Design, anything.
Add Cards
Write the front (question/word/concept), back (answer), optional hint, and tags. Add as many as you need — no artificial limits.
Study & Let SRS Work
Flip each card, rate yourself (Again / Hard / Good / Easy) and the algorithm handles the rest. Come back tomorrow to review exactly what needs it.
Any Subject
What will you master?
Memo adapts to any learning domain — from Japanese vocabulary to medical pharmacology.
Language Learning
Use Case
Master vocabulary, grammar rules, kanji, or verb conjugations with SRS. Used by JLPT, IELTS, HSK and DELF learners worldwide.
Example cards
Front
犬
Answer
Dog
Front
Bonjour
Answer
Hello
Front
مرحبا
Answer
Hello (Arabic)
The Science
How spaced repetition works
The SM-2 algorithm was invented in 1987 by Piotr Woźniak and powers Anki — the world's most popular flashcard app. Memo brings this same engine to the web with a beautiful, distraction-free interface.
After reviewing a card you rate your recall. The algorithm adjusts the next review interval — easy cards wait longer, hard cards come back sooner. Over time you spend less time reviewing while retaining more.
Forgetting curve
You forget 50% of new info within a day without review.
Spaced learning
Reviewing just before forgetting doubles retention efficiency.
After you flip a card, rate yourself:
Again
Complete blank — restart interval from day 1.
next interval
Hard
Remembered with difficulty — slow schedule growth.
next interval
Good
Recalled correctly with normal effort.
next interval
Easy
Instantly remembered — fast-track to long intervals.
next interval
Frequently Asked Questions
Is Memo free?▾
Yes, creating decks and studying with spaced repetition is completely free.
What is spaced repetition?▾
A learning technique that schedules reviews right before you're about to forget something, based on the SM-2 algorithm — it's proven to make long-term retention far more efficient than cramming.
What can I use Memo for?▾
Language learning, exam prep, coding concepts, professional certifications — anything you'd normally make flashcards for.
Can I create my own decks?▾
Yes, create custom decks with rich content and organize them however fits your studying.
Does it track my progress?▾
Yes, Memo tracks your learning progress over time so you can see how retention improves as you study.
Your brain deserves better than re-reading.
Start building decks today. The algorithm will remember what to show you and when — so you don't have to.