prep

Remember anything.

A flashcard app that does the scheduling for you. Describe what you want to learn — get a deck back. Study a handful of cards a day; the hard ones return when you'd forget them.

Start a deck — it's free No card. Sign in with Google.

How it works

Describe what you want to learn.

A topic, a textbook chapter, a paper, a syllabus, a body of code. Anything you'd want to keep in your head.

Get a deck of cards.

An AI agent plans short questions and answers. Review, edit, accept what lands — every card is yours to keep, edit, or delete later. Or write the cards yourself, if you'd rather.

multiple choice

What does ACID stand for in database transactions?

Atomic, Consistent, Idempotent, Durable
Atomic, Consistent, Isolated, Durable
Asynchronous, Consistent, Isolated, Distributed

short answer

What's the time complexity of inserting into a balanced BST?

Answer O(log n)

code

Reverse a singly linked list in place.

def reverse(head):
    prev = None
    while head:
        nxt = head.next
        head.next = prev
        prev = head
        head = nxt
    return prev

Study what's due.

Each card schedules itself with FSRS — the hard ones return right before you'd forget, the easy ones get out of your way. Push notifies when a stack comes due. Study for 90 seconds on the train, then close it.

What you get

AI-built

Describe a topic — paste a chapter, paper, or syllabus. An agent plans the deck for you. Edit anything; nothing is locked.
FSRS

Cards schedule themselves based on your recall. The hard ones return; the easy ones get out of your way.
PWA

Installs on your phone like a native app. Push notifies when a stack comes due. Works offline-tolerant.
BYOK

Generation and grading run against an API key you supply. Your model, your bill — no shared pool to throttle against.

Start a deck.

Free for now. Sign in with Google — no card.

Get started