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How to remember what you study
Everything below is written to be useful on its own, whether or not you ever install Memori. Where the research is strong, we say so and cite it. Where it's thinner than the internet claims, we say that too.
Start here
Three ideas do most of the work. Read them in this order if you're new.
Spaced Repetition: A Complete, Practical Guide
What it is, what the evidence actually supports, how to choose your intervals and daily volume — and how to recover when your reviews pile up.
Active Recall: What It Is and How to Actually Do It
The most reliably effective study technique in the literature, and the one most students abandon because it feels like it isn't working.
How to Make Flashcards That Actually Work
Nine rules, each shown as a before-and-after rewrite of a card that fails. Plus what to do with the cards that refuse to stick.
The Forgetting Curve: What Ebbinghaus Actually Found
The curve is real. Almost every version you've seen misreports it. What the 1885 experiment measured, what replicated, and what follows for studying.
Running it day to day
The practical decisions: how much, how often, and what to do when it goes wrong.
Your First 30 Days With Spaced Repetition
A week-by-week calendar, including the workload spike around day 18 that makes most beginners quit — and what to do when it arrives.
How Many Flashcards Should You Review Per Day?
You never choose your review count — you choose a new-card limit, and reviews arrive three weeks later at ten times the rate. The arithmetic, and how to fix a limit set too high.
The Best Spaced Repetition Intervals
The famous 1/3/7/21-day ladder comes from no study at all. What the spacing research supports instead, and what to write down if you're on paper.
Spaced Repetition vs Cramming
Cramming works — for about two days. Where the crossover sits, and the one-day protocol for when you genuinely have no time left.
FSRS vs SM-2: Which Algorithm Should You Use?
SM-2 has scheduled flashcards since 1987. FSRS models memory directly and fits itself to your history. What differs, and when the old one is still fine.
Studying with AI
Where automation genuinely helps, and where it quietly removes the part that was working.
How to Use AI to Study (Without Cheating Yourself)
One rule separates AI that accelerates learning from AI that quietly replaces it. Plus eight prompts that hold up and three habits that don't.
Turning Lecture Notes Into Flashcards With AI
Generation is the easy part. The step that decides whether you get a useful deck or a 400-card obligation is deciding what doesn't deserve a card.
AI-Generated Flashcards: A Quality Checklist
Hallucination isn't the main problem. The cards that damage a deck are entirely accurate and completely unlearnable. Seven checks, ten seconds each.
Coming next
Being written, in roughly this order.
- The 20 rules of formulating knowledge, updated
- How to dig out of a review backlog
- Cloze deletion: when to use it
- How to fix leech cards
- Spaced repetition for vocabulary
- Interleaving vs blocked practice
- Desired retention: why 90% is the default
- The minimum information principle
- Turning a PDF or textbook into a study deck
- Using an AI tutor Socratically
- Active recall vs rereading and highlighting
- How to actually remember kanji
Start remembering what you learn
Free on Android and iOS. No account needed — your first deck works entirely offline.
