Interactive

See exactly how Recka schedules

No hand-waving. Every demo below runs the same scheduler the app ships with, right here in your browser. Change the numbers and watch what Recka would actually do with your cards.

The scheduler

The forgetting curve, and how reviews bend it

Every card has a memory that decays over time. Recka's FSRS scheduler models that decay for each card and shows it to you right as recall is about to slip below your target. Rate the card and watch each success lengthen the next interval. This is the real thing, not decades-old SM-2.

94%

The recall you want to hold. Aim higher and Recka reviews you sooner and more often; aim lower for fewer reviews and a little more forgetting.

0%50%100%target 94%1m10d20d1motime since first review
Reviews
3
Next interval
20d
Stability
39.2d
Difficulty
2.1 / 10
3/14 reviews
When there is a date on the calendar

Exam Sprint, so nothing peaks too early or too late

Normal scheduling is built for the long run, so a card you know well might not come back until weeks after your exam. That is fine in June and useless the week of a test. Set an exam date and Recka caps every interval at a quarter of the days left, so each card keeps resurfacing and lands on exam morning still fresh. Drag the date closer and watch the two schedules pull apart.

21 days

Set a date and Recka aims every review at it, tightening the schedule as the day gets closer.

90%

The recall you want to hold day to day, before the sprint pulls the last stretch even tighter.

Normal scheduleWith Exam Sprint
0%50%100%EXAMdays from today
Reviews before the exam
3 vs 6
Recall on exam morning
99% vs 100%
Next review, no sprint
53d after exam

Left alone, this card would not resurface until 53 days after your exam. You would walk in never having seen it again. Exam Sprint caps each interval at a quarter of the days left, so the card keeps coming back and lands on the morning of the exam still fresh, weakest and highest-yield cards first. Set it on a folder and every deck inside inherits the same date.

Same interval-cap math the app runs when a deck or folder has an exam date set.

When you fall behind

Rescue Mode, instead of an avalanche

Miss a few days and most apps greet you with a wall of hundreds of overdue cards. Recka spreads that backlog across the days you actually have, weakest cards first, so no single day becomes the next cliff. Drag the sliders to feel it flatten.

320
4 days
1 day
Without rescue
320
all due
today
With Recka Rescue Mode
80
80
80
80
off
D2
D3
D4
D5
Busiest day
80 cards
Roughly per day
~80
Days off first
1

Weakest cards (most lapses, lowest ease) come back first, so the day you return you meet the cards you're shakiest on while they still matter most. Change your mind and get time back? One tap pulls everything you haven't reviewed yet straight back to today, and keeps the ones you have.

Run it on your own decks

The simulator is the same engine that runs on your machine. Download Recka, bring your cards across, and let it do the scheduling. Free while we're in beta.