Cards you write.
Recalled when it matters.
Write flashcards for the IB ESS and Geography syllabus. The AI grades them green, amber or red. FSRS schedules every review for just before you forget.
- ESS · SL / HL·438 syllabus points
- Geography · SL / HL·252 syllabus points
Your whole deck in one glance. Click a red tile to open the card and rewrite it.
“Effectiveness is a function of atomicity, active generation, effortful retrieval, and algorithmic scheduling.”
Four ideas. Every pixel earns its place.
Atomicity, generation, retrieval, scheduling. They run from card-writing to your daily review queue.
Atomicity
One fact per card
Bundle two facts on one card and your recall is 0.9 × 0.9 = 81%. The algorithm can’t isolate which one you forgot. Split it.
Active generation
You write it, you learn it
The generation effect: you remember information you produce yourself. The AI coaches your phrasing — it never writes the card for you.
Effortful retrieval
The struggle is the point
Reading notes feels productive but doesn’t build memory. The pause before you flip the card is where the learning happens.
Scheduling
Review at the right time
FSRS schedules each card just before you forget. Show up consistently and intervals stretch from minutes to months.
Rewrite until it's green.
The AI never writes a card for you. It names what's broken and lets you re-write. Same card. Better question.
Describe the process of eutrophication.
Excess nutrients enter water, algae bloom, algae die, decomposition uses oxygen, aquatic organisms die.
Five separate steps. Split into five cards so FSRS can isolate the one you forgot.
What is the first stage of eutrophication?
Excess nutrients (N and P) enter a water body.
What is biodiversity?
The variety of life in an area.
Pin a level — species, genetic, or ecosystem. Right answers should be unambiguous.
What is species diversity?
The variety of species in a given area.
Explain how a waterfall forms and retreats.
Hard rock overlies soft rock, soft rock erodes, undercutting, overhang collapses, retreat upstream…
Five sequential steps in one card. Pick one mechanism per card.
What causes undercutting at the base of a waterfall?
Erosion of the softer rock beneath the resistant cap rock.
See every card you've ever written, by quality.
Every card you've made paints as a single coloured tile, sorted red → amber → green. Click any red tile to open the card and rewrite it. As you internalise the seven rules, the grid drifts greener.
- The red tiles are an obvious to-do list.
- Click any tile to open and rewrite the card in place.
- The grid is per subject and can be organised by unit.
Minutes today. Months in a year.
Rate each card honestly. The algorithm fits a memory model to you and re-spaces every card the moment you press Good.
Today you're seeing this card on a 3-day interval. The next time you're Good, it'll push to 8 days.
No card required. No upsell. Sign in with your Google account and start writing.