NutriBrain

When you reveal a card you rate how it went. Your answer determines when the card comes back.

Buttons

Button	Meaning	What happens
Again	Blank — couldn't recall it	Card goes back to the learning steps, back in 1 minute
Hard	Got it but with real effort	Interval grows a little (always at least a day); ease drops a little
Good	Recalled it correctly	Normal interval growth based on your ease factor
Easy	Instant, effortless recall	Bigger jump; ease factor increases

Tip

Be honest. Marking Hard as Good feels faster but weakens the long-term schedule. Pressed the wrong one? Tap Undo last grade.

Key	Action
Space or Enter	Reveal the answer, then Good
1 2 3 4	Again, Hard, Good, Easy
Z	Undo the last grade
E	Edit the current card
Esc	Close a dialog

State	What it means
New	Never studied. Up to your daily new-card limit enters each day.
Learning	Seen at least once but not yet graduated. Reviews happen in minutes (your learning steps).
Review	Graduated. Reviews scheduled in days. Each Good rating multiplies the interval by your ease factor (~2.5×).
Mature	Interval ≥ 21 days. You've shown strong long-term retention of this card.

The three numbers above the card are new (blue), learning (red) and review (green) cards left today.

Every card has an ease factor (starts at 2.5). It's the multiplier applied to the interval each time you press Good.

Example: interval 4 days → Good → 4 × 2.5 = 10 days → Good again → 10 × 2.5 = 25 days. Reviewing late gives partial credit for the extra time, and longer intervals get a small random spread so cards added together don't all come back on the same day.

Pressing Hard lowers ease (−0.15). Pressing Again lowers it more (−0.20). Pressing Easy raises it (+0.15). Ease can't go below 1.3 — that's the floor so cards never get stuck repeating daily.

The small label under each button shows the interval you'd get if you pressed it right now.

A suspended card stays in your collection but never shows up for study. A leech is a card you keep forgetting; after the number of lapses set above it is suspended automatically so you can rewrite it. Find both under Cards → status filter.

Shown as a percentage for today. It counts any rating above Again (Hard / Good / Easy) as a successful recall. A healthy target is 85–90 % — lower means cards are too hard; higher might mean you're rating too generously.

Deck — the course or subject (e.g. "Simulations"). Set it in the Deck field before adding or bulk-importing.

Module — a sub-label within a deck (e.g. "Module 1 – Intro to RVs"). Add it as the third column in bulk import: front | back | Module 1. It shows as a purple tag on every card so you always know where the material comes from.