Learning Insights

What Learning Insights tracks

Learning Insights surfaces the data that the FSRS scheduler is using internally, presented in a way that helps you understand the health and trajectory of your learning — not just how many cards you reviewed today.

Mastery

Mastery is the percentage of your cards currently in the FSRS Review phase. A card enters Review after it graduates from the initial Learning steps — meaning you've rated it correctly enough times that FSRS is now scheduling it at day-scale or longer intervals.

A high mastery percentage means a large portion of your cards have moved from active learning into durable long-term memory. A low mastery percentage means you have many cards still in early learning stages or that haven't been studied at all.

Mastery is not the same as "how well you did in your last session." It measures the state of your entire collection, accumulated over all your review history.

Mature cards

Mature cards are a subset of Review-phase cards: those with 21 or more days of stability. A stability of 21+ days means the card can go three weeks without review before your recall probability drops to the target threshold.

Mature cards are a useful proxy for deeply embedded knowledge — material you've reviewed enough times at long intervals that it's unlikely to disappear quickly. Watching your mature card count grow over months is a meaningful signal that you're building durable memory.

FSRS state distribution

The state distribution chart breaks down your entire card collection into four categories: New, Learning, Review, and Relearning.

• New: cards you've never reviewed
• Learning: cards in active early learning steps
• Review: cards on long-term FSRS intervals
• Relearning: cards that lapsed (rated Again from Review) and are being reinforced

This chart shows your learning pipeline, not recent activity. A large "New" bar means you have unused cards. A large "Relearning" bar might indicate cards are being seen too infrequently or that a particular topic needs more attention.

30-day rating distribution

This chart shows how often you've tapped Again, Hard, Good, and Easy across all your reviews in the past 30 days. It gives you a picture of your overall performance calibration.

A healthy distribution for someone maintaining a well-established deck tends to look like: small Again proportion (10–15%), moderate Hard, majority Good, some Easy. A very high Again rate may indicate cards are scheduled too aggressively, the material is too hard, or reviews are being skipped (leading to overdue cards piling up). A high Easy rate may mean you're reviewing cards too frequently — they could have longer intervals.

Due workload forecast

The workload forecast shows a chart of upcoming scheduled review dates — how many cards are due each day over the coming weeks. This is generated directly from the FSRS schedule, not an estimate.

Use the workload forecast to pace your new card additions. Adding many new cards at once will create a review wave 1–3 weeks later when those cards graduate to Review. A flat, consistent forecast is a sign of a sustainable study pace.

Average retrievability

Retrievability is the FSRS estimate of your current recall probability across all your Review-phase cards. An average retrievability of 92% means that, right now, you'd be expected to correctly recall about 92% of your due-and-not-yet-due Review cards if tested.

• Very high retrievability (95%+): your cards may be coming back more frequently than needed — reviews are happening well before memory fades
• At target (~90%): the schedule is working as intended
• Lower retrievability (below 80%): you may be behind on reviews, or you have many overdue cards that haven't been seen in a while

Monthly review activity

This chart shows your review volume and success rate trend over months. It's primarily useful for tracking habit consistency — whether you're studying regularly or in irregular bursts. Steady month-over-month volume generally correlates with better long-term retention.

Study time

Study time shows the minutes you've spent in active review sessions per day. This is based on session duration, not card count, so it reflects actual time investment rather than how easy or hard your cards were.

Basic analytics vs. Pro analytics

All plans include:

• Card counts per deck
• Basic FSRS state overview (New / Learning / Review / Relearning counts)
• Session completion history

Pro plan includes the full Learning Insights dashboard:

• Mastery percentage and mature card count
• Detailed FSRS state distribution chart
• 30-day rating distribution breakdown
• Due workload forecast
• Average retrievability tracking
• Monthly review activity trend
• Daily study time

Related reading

Spaced Repetition in Neurako

How the review queue works in Neurako — card states, rating buttons, interval previews, cram mode, and daily study habits.

FSRS Algorithm

How Neurako's FSRS scheduler models your memory using stability, difficulty, and retrievability to schedule reviews at the right time.

Academic Studying

How to build a flashcard-based study system for courses, lectures, and exams — including what flashcards work for and what they don't.