The schedule beats cramming
An Anki-style SM-2 scheduler shows each card right before you'd forget it. Intervals stretch as recall grows, so reviews shrink while what you know sticks.
750+ cards · 4 interview tracksStop re-reading.
Stop re-reading.
Start recalling.
RecallDeck turns interview prep into durable memory with spaced repetition. Flip a card, grade yourself honestly, and let the schedule bring it back right before you'd forget.
Free · keyboard-first · your progress stays yours.
Data structuresJunior
What's the average time complexity of a hash map lookup?
Recall it first — then check yourself honestly.
Why RecallDeck
Built for a groove
Reveal with Space, grade 1–4, never reach for the mouse.
Space1234
750+ cards, your pace
Study one deck or all of them, by topic and difficulty.
JuniorMiddleSeniorConcept
Progress that's honest
Reviews per day, real accuracy, and mastery by deck — including the cards where recall is slipping.
One app, every interview track
Pick the role you're prepping for and the whole app — study queue, browse, and stats — focuses on it. Shared topics like Python and SQL carry your progress across tracks, so you never study the same card twice.
Full-Stack Developer
Language core, databases, backend, frontend, and system design.
PythonDatabasesReactSystem Design
Backend Engineer
APIs, data modelling, scaling, auth, and the CS fundamentals behind them.
PythonDatabasesAPIsSystem Design
Data Analyst
SQL, Python, and the statistics-minded questions analysts actually get.
SQLPythonNoSQLBehavioral
Product Designer
Design fundamentals, UX process, design systems, and portfolio crits.
UX ProcessDesign SystemsInteractionPortfolio
From notes to recall in three steps
No decks to build, no setup to fuss over — hover any step to follow the loop at your own pace.
Progress you can actually read
Every review feeds a dashboard that shows what's sticking and what's slipping — so your study time goes where it counts.
You reviewed 21 cards today — 88% accuracy across 220 reviews so far.
Reviews · last 30 days245 total
Answer breakdown
Again
9 · 4%
Hard
17 · 8%
Good
134 · 61%
Easy
60 · 27%
Mastery by deck
Python54 mature · 92/130 studied
Databases33 mature · 61/104 studied
System Design7 mature · 18/29 studied
Frequently asked questions
Everything worth knowing before your first session.
RecallDeck is a free, spaced-repetition flashcard app for tech interview prep. It comes loaded with hundreds of ready-made cards across multiple role tracks — Full-Stack, Backend, Data Analyst, and Product Designer — so you can start studying immediately instead of building a deck.
Spaced repetition schedules each card to reappear right before you'd forget it. Instead of passively re-reading notes, you actively recall the answer — which builds durable, long-term memory while daily reviews shrink as your recall grows.
Yes, RecallDeck is completely free. Sign in with GitHub and your deck and full review history sync to your account.
No. RecallDeck ships with hundreds of curated interview cards, organised into role tracks and by difficulty — Junior, Middle, Senior, and Concept. Pick the track you're interviewing for, then study one deck or all of them, at your own pace.
RecallDeck uses an Anki-style SM-2 algorithm with learning steps, ease factors, and lapses. Cards you know come back less often; the shaky ones return sooner — so review time goes where it's needed most.
Yes. Every card and the entire interface are fully available in both English and Russian, and you can switch languages at any time from the toggle in the header — your progress is shared across both.
Ready to make it stick?
Start your first session in under a minute. Your future self, mid-interview, will thank you.