How do study statistics track your vocabulary progress?

A memory scheduling engine computes parameters that are essential to its algorithm but largely meaningless to a human learner. Seeing a card's mathematical stability rating or underlying decay rate does not answer the questions learners actually have. What you genuinely need to know is whether your study effort is working and whether you will reliably recall your vocabulary when it matters. A statistics dashboard that exposes algorithmic internals instead of answering those questions provides decoration rather than clarity.

Tomaru translates complex memory data into practical, ordinary language focused on real-world memory durability.

What do Tomaru's statistics show?

Instead of displaying raw engine values, Tomaru highlights metrics that measure true long-term learning outcomes:

• Long-term memory counts: Displays how many of the words you are currently learning you could still recall in more than 30 days, and in more than 90 days. This provides a direct answer to whether your studying is working, focusing on durability rather than volume.
• Durability distribution: Shows the structural spread of memory strength across your entire collection, allowing you to see the overall shape of your learning rather than a single average number.
• Future review forecast: Projects how many reviews each upcoming day will bring, turning sudden workload surprises into a predictable schedule you can plan around.

Effort metrics vs. durability metrics

Volume statistics—such as daily study streaks, total cards viewed, or hours spent studying—are common across learning apps. However, these metrics measure effort rather than results. They confirm that you worked, but they do not prove that you learned.

While activity streaks and review counts can be motivating, they are not evidence of retention. A count of words that will survive three months in memory gives you the actual insight you came for.

All statistics, durability distributions, and review forecasts are completely free and unlimited for all users.

To understand the core scheduling engine behind your memory data, read how spaced repetition works. To see how future review loads inform target deadlines, see exam completion forecast.

Related questions

Why doesn't Tomaru focus on daily review streaks?

Daily streaks track usage consistency, but they do not measure memory strength. Tomaru emphasizes long-term memory durability so you can verify that your study time translates into lasting recall.

What is the difference between 30-day and 90-day recall counts?

The 30-day and 90-day metrics show how many words in your collection have reached a level of memory stability where you can reliably recall them a month or a quarter into the future without reviewing them today.

Are full statistics available on free accounts?

Yes. All memory statistics, durability distribution views, and review forecasts are free for every user without restriction.