The review loop
One card. One gesture. Next.
A review session should be something you can do standing on a bus with one thumb. Reveal the answer, swipe the way you actually felt about it, and the next card is already there. There is nothing else on the screen, because there is nothing else to decide.
- 1Your word
- 2Answer
- 3Schedule
30 seconds, no account
What are you learning?
Pick a pair, then put in a word you actually want to remember.
Any pair works — these four are just the quickest to demo.
Scheduled
tomorrow
- 11 day
- 23 days
- 38 days
- 419 days
Nothing you type here leaves this page.
Every way to answer
Thumb, keyboard, or button — same result
The gesture is the fast path, not the only path. Nothing in Rayaad is reachable by dragging alone.
Swipe right
You knew it. The gap before this word comes back grows.
Swipe left
You did not. It returns inside this session, after a few other cards.
Keys
Space reveals, ← and → answer, Backspaceundoes.
Undo
Reverses the scheduling, not just the animation. A slip costs nothing.
Before you start
You can see the size of the session
Rayaad shows what is due per deck before you open one, so a session is never an unbounded pile. Answer them and you are done for the day — there is a “done” state, and it is a real one rather than a nudge to keep going.
- Due counts per deck and across the pair.
- A finished session that stays finished.
- No streak, no daily goal, no notification pressure by default.
- Due today23
- Reviewed1,412
- Retention91%
- Known words489
Everything a session survives
A review counts once, wherever you were
No connection
Answers are written locally first and pushed when you are back. A tunnel does not cost you a session.
Two devices at once
Each answer carries its own identity, so the same review arriving twice is stored once and the schedule is recomputed from the full history.
Hands full
Cards can speak themselves, and listen mode turns the due queue into a playlist you can walk through.
Why the interaction is the product
A spaced-repetition tool is only as good as the number of reviews you actually do, and the thing that decides that number is friction per card. Half a second of hesitation over which of four buttons to press, multiplied by two hundred cards a day, is the difference between a habit and an abandoned deck.
So Rayaad removed the decision rather than optimising it. Knew it ordidn't — the two answers people can give instantly and consistently. The scheduler does not need more than that: FSRS is designed to work correctly from binary grades, and the extra buttons buy precision that self-assessment noise takes straight back.
What the gesture is doing underneath
Each answer writes a permanent, append-only review log and a new card state in one local transaction, then queues the log for the server. The server assigns an order, clamps the timestamp, and replays the card's entire history through the same scheduler to produce the canonical state. Your device's answer is treated as a proposal and the replay is the truth, which is what keeps three devices from drifting.
The visible consequence is small and worth having: a card you answered on a phone that was offline for two days lands in the right place in the history rather than at the end of it.
Where a review goes next
Straight into the schedule. A card you get right for the eighth time will not be back for 11 months — readhow that number is chosen, or seehow decks organise what you are reviewing.
About reviewing
Why are there only two answers?
Because the middle options are the ones people argue with themselves about. "Was that a Hard or a Good?" is a decision you make several hundred times a week, it slows every card down, and the honest answer is usually that you do not know. Rayaad asks the one question you can answer instantly and reliably: did you know it or not.
What if I swipe the wrong way?
Press undo, or Backspace. It reverses the scheduling the answer caused, not just the card that is on screen — the card goes back to the state it was in before you touched it. Undo is refused only once the review has already been sent to the server, and the app tells you when that is the case rather than pretending.
Can I review with the keyboard?
Yes. Space reveals, the left and right arrows answer, and Backspace undoes. A session on a laptop never needs the mouse.
Does reviewing work without a connection?
Yes, fully. Answers are written to the device first and pushed when there is a connection, so a session on a train or a flight counts exactly as much as one at a desk. The same is true on the phone apps.
What happens to a card I miss?
It comes back in the same session, but not immediately — other cards go past first, so you are actually recalling it rather than reading it off the screen you just saw. Rayaad enforces a minimum delay and a minimum number of intervening cards before a missed card can return.
Is there a daily review limit?
No, on any plan, and there never will be. A spaced-repetition app that caps reviews is not a spaced-repetition app — the whole mechanism depends on cards being seen on the day they come due.
Twenty words tonight.
Free plan with no review limit, on every device. No ads, and your words stay yours.