Spaced repetition
The spaced repetition app for vocabulary
Spaced repetition is the most reliable way to remember what you learn: review each word just before you would forget it, and the gaps grow until a word costs you almost nothing. Rayaad does the scheduling, so you only do the remembering.
The idea, in plain words
Everything you learn starts to fade straight away. Each time you successfully recall it, it fades more slowly. So the smart time to review is right before you forget.
Doing that by hand means keeping a calendar for hundreds of words. A spaced repetition app keeps it for you: in Rayaad, a word you keep getting right comes back tomorrow, then in a few days, then weeks, and after eight correct answers it is 11 months away.
How Rayaad works out each gapVocabulary is the perfect fit
Lots of small, separate items you either remember or do not — exactly the shape spaced repetition handles best.
Minutes, not hours
Words you know drift months apart, so the daily session stays small even as your deck grows into the thousands.
Honest answers win
If you had to hunt for it, you did not know it. Rayaad brings it back soon — that is how the method learns what you need.
Choosing an app
Six questions to ask any spaced repetition app
They work on any app, including the one you use now. Rayaad’s answers are in green.
- 1
Which algorithm does it use?
An app that will not say how it schedules is asking you to trust gaps you cannot check. FSRS is the current, open standard; SM-2 is the older formula many apps inherited.
FSRS-6, with every setting published.
- 2
Is there a daily review limit?
Spacing only works if a word is seen on the day it comes due. A cap on reviews breaks the method rather than limiting it.
No limit, on any plan.
- 3
How many taps does a card take?
Every extra choice is a decision made hundreds of times a week. Most people want precision less than they want to be finished.
One swipe — knew it, or did not — plus undo.
- 4
Does it work offline?
The sessions people actually finish happen on trains, in queues and in bed, and not all of those have a signal.
Yes. Reviews sync when you are back online.
- 5
Can you take your words with you?
Months of reviews are real work. An app you cannot leave is one to think hard about joining.
Export everything in one file, any time.
- 6
What happens after a break?
Life gets in the way. An app that punishes the gap with a lost streak or a guilt-inducing pile is one you stop opening.
Due words are simply due. No streaks to lose.
Spaced repetition questions
What is spaced repetition?
A way of reviewing that schedules each thing you are learning at the point you are about to forget it. Instead of reviewing everything every day, each item gets its own gap, and the gap grows every time you remember it.
Does spaced repetition actually work?
Yes. That spreading practice out beats cramming, and that recalling something strengthens it more than re-reading, are among the most consistently reproduced findings in learning research. Apps differ in how well they estimate the right gap for each item.
How long should a daily session be?
It is set by what is due, not by a target you pick. Because words you know well come back rarely, the daily number follows how many new words you add, not how many you have learned. A mature deck is often a few minutes.
Is Rayaad a general-purpose spaced repetition app?
No — it is built for vocabulary, with one kind of card: a word, its meaning and an optional example. That focus is what lets it arrive already tuned, with nothing to configure.
Start remembering the words you learn
Free to start, on the web today. No card, no ads, and your words stay yours.