FlashDeck is a flashcard app that runs entirely inside a web page: build decks, study them with a real spaced-repetition scheduler, and export everything to CSV. It exists because the useful core of a flashcard tool — a queue, an honest grading loop, and a schedule that decides what’s due — fits comfortably in a browser, with no account and no server in the middle.

What it does

• Decks and cards. Create as many decks as you like; cards hold front/back text with a small markdown subset. Two sample decks (Spanish essentials, world capitals) ship so the study loop is visible in the first minute.
• A real scheduler. Cards carry an ease factor, a repetition count and a day-granularity interval; a four-button grading row (Again / Hard / Good / Easy) drives the schedule, and lapses come back within the session.
• CSV in and out. Import a two-column file to build or extend a deck; export any deck back to the same format for backup or migration.
• Session stats. Recall rate, grade breakdown, lapses and time at the end of every session.

The one opinion that shaped the site

Scheduling math shouldn’t be a black box you have to trust. FlashDeck runs a variant of SM-2 — the algorithm Piotr Wozniak published for SuperMemo — and the algorithm page states the exact parameters: the grade-to-quality mapping, the ease-factor formula, the interval ladder and the lapse rules, plus an honest list of how it differs from Anki’s scheduler. If you want to verify a claim, you can watch any card’s interval in the deck manager and check it against the published table.

What it deliberately doesn’t do

No accounts, no cloud sync, no shared-deck marketplace, no mobile app to install. Decks live in your browser’s localStorage, which keeps the privacy story boring and the page fast — and means your CSV export is the real backup. If you need multi-device sync, this tool will honestly disappoint you; the CSV page explains how to move decks instead.

Who’s behind it

FlashDeck is maintained by an independent studio that ships focused, single-purpose web utilities. Corrections — a mistranslated card in a sample deck, a scheduler behavior that doesn’t match the documented formula, an import that eats your file — are the mail we want most. See the contact page.