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Edirae Brain

See what you know, and what is slipping.

Every concept you learn lands in your Brain, with a live score for how well you still remember it. It warns you before something fades and brings it back in time.

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Brain

Brain

Your Brain, 128 concepts mastered · 84% avg retention (based on 37 Gates)

Builds completed
6
Day streak
19
At risk
7
Gates passed
37

Your brief this week

Joins and GROUP BY are locked in. Window functions are slipping, and they sit under everything you are building next. Ten minutes today brings them back.

Start focus sessionNot this week
7

concepts will fade this week.

A few minutes of review locks them back in.

Start review session

Currently learning

  • SQL for data analysts62%
  • Statistics fundamentals38%

Sees what is fading

Memory fades quietly. Your Brain watches each concept's recall score and tells you, by name, what will slip this week, while a few minutes is still enough to save it.
  • Counts what will fade this week
  • Shows exactly which concepts, and how far they have dropped
  • One tap starts a review of just those
7

concepts will fade this week.

A few minutes of review locks them back in.

Start review sessionShow me which ones
  • Window functions41% retention
  • Bayes' theorem46% retention
  • Confidence intervals52% retention
  • Index design58% retention
  • Sampling bias63% retention

Revives it on time

Each concept comes back right before you would forget it. Every review makes it last longer, so the gaps between reviews keep growing.
  • Reviews timed to each concept, not a fixed schedule
  • A weekly brief names what to focus on
  • Your real curve shown against the forgetting curve

Left vs inner joins

+61% vs forgetting curve

Review now

GROUP BY and HAVING

+48% vs forgetting curve

Review now

Normalization

+55% vs forgetting curve

Review now

Without review Reviewed when it was about to fade

Proves it is sticking

Feeling sure is not the same as knowing. Your Brain compares how confident you were with how often you were right, and keeps score of the Gates you pass.
  • Confidence checked against real answers
  • Gates passed and concepts mastered, counted
  • A streak that shows the habit is working

Confidence calibration

Calibrated. Your confidence tracks how much you actually know.

86

Score

Gates passed

9

last 14 days

Day streak

19

keep it going

Mastered

14

this month

Knows what you know

See everything you have learned as one map, coloured by how well you hold it. Then see what is missing: the gaps to fill, where to go deeper, and what to learn next.
  • Every concept, banded from strong to at risk
  • Gaps found from the questions you missed
  • Next steps that fit your goal

Window functions

Retention
41%
Category
SQL
Review now
  • Strong (≥90%)
  • Good (70–90%)
  • Fading (50–70%)
  • At risk (<50%)
  • Dormant

  • Fill a gap

    Window frame clauses

    Your last two Gates missed ROWS BETWEEN.

  • Go deeper

    Reading query plans

    You know indexes. Next is seeing them used.

  • New territory

    Star schema modelling

    The next step for your analytics goal.

Everything you learn, kept and brought back before you forget.

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