Association for Psychological Science · reviewed 2026-10-10
What this source supports: Spaced repetition schedules review existing items in priority over new items for long-term retention.
Source limit: Optimal new-card count varies by material difficulty and individual. Start conservatively.
These sources support the statements above. They do not show that every person needs this guide. They do not show a specific result.
Limits
This guide plans session sizes from your own counts. It does not test your memory or adapt to your results.
Optimal new-card count varies by material difficulty and individual. Start conservatively.
Use current instructions from the responsible organization. This guide is a planning aid, not an official decision or a substitute for qualified advice.
Common questions
What does the App compute?
Turn an item count, a daily new-item rate, and a deadline into an introduction plan with the review load counted.
What does the App not do?
This App plans session sizes from the numbers you enter. It does not test your memory or adapt to your results.
Where do the numbers come from?
You enter every number yourself. The sources support the method and the limits. They do not produce a result for your specific case. Keep the original documents next to the sheet you build.
Before you start
Open the linked source page and keep it beside you.
Gather the values the App asks for:
Items to learn.
Days until the deadline.
New items started per day.
Set aside ten quiet minutes; rushed numbers are the main error this guide prevents.
Free Companion App
The App computes the worked example with your own numbers, in your browser.
APP 1
Spaced-Review Session Planner
Turn an item count, a daily new-item rate, and a deadline into an introduction plan with the review load counted.
This guide is edited for clarity and checked against the sources it links. It is not a substitute for official instructions or qualified advice. A linked source does not show that every person needs this guide.