Statistics

Study activity, recall quality, and upcoming workload for your current language.

Open Stats

Stats is not in the sidebar. Open it from Home via Open stats →, or go directly to /stats. All figures are scoped to your active study language — switch languages from the navigation bar or Profile first if needed.

At a glance

Four summary cards at the top:

• Reviewed Today — reviews completed today, with today's accuracy when you have recent reviews
• Due Today — cards scheduled for review now
• Current Streak — consecutive days with at least one review
• Words Mastered — words that meet the mastery threshold (see below)

Review quality (30 days)

• Accuracy Trend — daily non-Again accuracy over the last 30 days
• Rating Distribution — how often you chose Again, Hard, Good, and Easy
• Response Time Trend — median time to rate each day

Activity and workload

• Reviews This Week — unique words reviewed per day (last 7 days)
• Vocabulary Growth — words added per day (last 7 days)
• Mastery Breakdown — counts of New, Learning, and Mastered words
• Due Forecast — how many reviews are coming in the next few days

Supporting metrics

Lower on the page:

• Review windows — reviewed counts and accuracy for 7-day and 30-day windows, unique words reviewed, and active days in the last 14 days
• Library and queue health — total words, awaiting triage, flagged words, and cards due in 3 and 7 days

Accuracy

Accuracy is the percentage of your recent reviews that were not rated Again. Hard, Good, and Easy all count as successful recalls. This is related to — but not the same as — FSRS's ~90% retention target used for scheduling. See Spaced Repetition.

Mastery breakdown

Mastery groups non-suspended vocabulary into three buckets:

• New — never reviewed
• Learning — still consolidating: Learning or Relearning, or Review with stability below the mastery threshold
• Mastered — Review state with FSRS stability ≥ 90 days. The algorithm predicts you would still recall the word about three months from now.

Mastered words stay in the review schedule — they simply appear less often as stability grows.