spaced-repetition study for developers
Remember everything you study for the interview.
Codium turns computer-science fundamentals, JavaScript, TypeScript, CSS and more into flip cards and coding tasks — then brings each one back exactly when you're about to forget it.
A card has two sides. You recall, then you check.
the idea
Four parts, one loop
Everything in Codium exists to get the right material in front of you at the right moment.
-
Cards
A question on the front, the answer on the back. Read, try to recall, then flip to check yourself.
-
Decks & the learning tree
Cards grouped by topic — CS fundamentals, HTML, CSS, JavaScript, TypeScript — inside a tree you navigate top to bottom.
-
Coding tasks
Some cards ask you to write code, not recall a fact. Solve them in an editor right in the browser.
-
Spaced repetition
Every review reschedules the card. Easy ones drift weeks away; shaky ones return tomorrow.
why it works
The better you know it, the longer it waits
Rate a card and Codium picks the next review date. Strong recall pushes it further out — so your time goes to what you're about to forget, not what you already know.
- 1 day first recall
- 3 days holding
- 1 week solid
- 3 weeks confident
- 2 months learned
Miss one and it drops back to the start — no shame, just another look tomorrow.
the review loop
How a study session goes
-
Pick a deck
Choose a topic from the learning tree and start the queue of cards due today.
-
Answer in your head
Read the question and commit to an answer before you look. The effort is the point.
-
Flip the card
Reveal the answer and compare it against what you recalled.
-
Rate your recall
Again, Hard, Good, or Easy. Your honest rating sets the next interval.
-
Come back later
Codium schedules the next review. Close the tab — it remembers so you don't have to.
Start your first deck.
The app is where the studying happens. This page was just the pitch.
Open the app →