Flashcard Score Tracker

Spaced-repetition flashcard study tracks two metrics per card: number of correct recalls and number of attempts. Mastery percentage is correct ÷ attempts. Cards below threshold (commonly 80%) cycle back to review more frequently; cards above are spaced further apart.

This tracker logs your session results, computes per-deck and overall mastery, and flags cards that need rework.

The spaced-repetition concept goes back to Hermann Ebbinghaus's 1885 forgetting-curve experiments, which showed memory decay follows a roughly exponential curve. Sebastian Leitner formalized the box system in 1972: cards advance through boxes with longer review intervals (1 day, 3 days, 1 week, 2 weeks, 1 month) when answered correctly and drop back to box 1 when missed. Anki's SM-2 algorithm (Piotr Wozniak, 1987) replaced fixed boxes with per-card intervals adjusted by ease factor and recall difficulty. Modern variants (FSRS, SuperMemo's later algorithms) use stochastic models of memory to predict optimal intervals more accurately than SM-2.

A worked example: a deck of 100 vocabulary cards. After three sessions of 30 cards each, the tracker shows 90 attempts logged with 65 correct — 72% overall mastery. Per-card breakdown shows 15 cards at 100% (3/3 correct), 25 at 67% (2/3), 30 at 50% (1/2), and 20 at 0% (0/2). The 20 zero-percent cards are the priority for next session — they haven't been learned at all yet. Cards at 100% can be deferred for several sessions before review without significant decay risk. The tracker computes total study time, average per-card time, and a session streak count.

Limitations: this is a tracker, not a scheduler. A real spaced-repetition system (Anki, Mochi, RemNote) computes when each card should next appear based on its history; the tracker reports performance but doesn't automate scheduling. For serious study (medical exams, language acquisition), use a full SRS app and supplement with this tracker for session-level analysis. Binary correct/incorrect scoring is more reliable than partial credit — graded responses introduce subjectivity that tends to inflate mastery numbers. The 80% threshold is conventional; your retention goal might warrant 90% (high-stakes material) or 70% (broad-survey material).