Every interview tests four things: pattern recognition, approach planning, code verification, and concept retention. Every Synapse feature maps to one of these.
“What pattern is this?”
The first question in every interview. The skill nobody else trains.
Elsewhere
Flat list of thousands of problems. Tag filters. Sort by difficulty. Figure out your own learning order.
A visual map of every concept organized into progressive domains. Prerequisites are explicit — you never hit a concept you're not ready for. See what's mastered, available, and locked at a glance.
Elsewhere
No pattern recognition training at all. You only drill coding. But "what pattern is this?" is the first question in every interview.
Rapid-fire classification quizzes. Read the problem, identify the pattern from signal words — no coding. The interview skill nobody else drills, with dedicated practice for it.
Coming: AI-powered concept decomposition for unfamiliar problems
Signal words, when to use it, common mistakes, and a code template — for every concept. The cheat sheet that makes patterns click.
5-minute Day 1 assessment. We meet you where you are — experienced grinders and complete beginners get different paths.
“Walk me through your approach”
The difference between passing and failing is what happens before you type.
Elsewhere
Read the problem. Start typing immediately. Run tests. Fix errors. Repeat until green. No planning required or encouraged.
The code editor stays locked until you formulate a plan. Identify the pattern, state your approach, flag edge cases. As your mastery grows, the scaffolding fades — full support for beginners, optional for experts.
Coming: AI Socratic coaching that guides your thinking without revealing the answer
Elsewhere
Stuck? Two options: figure it out alone, or click "Show Solution" and see the full answer. Learning opportunity gone.
Three tiers: conceptual → strategic → tactical. Each tier reveals a bit more — from 'what to think about' to 'what to try' — without ever showing the answer.
When you're truly stuck, study smart — not give up. An annotated walkthrough with self-explanation. Mastery still gains, and a different problem gets scheduled for review.
“How do you know it's correct?”
Mental execution is what separates pattern recognizers from problem solvers.
Elsewhere
Write code, hit run, check if tests pass. No mental execution. No self-assessment. Just trial and error.
Before your first run, predict what the code will output. Walk through it in your head the way you would in an interview. Adapts to your level — active for new concepts, fades as you grow.
Coming: AI that reads your code and asks exactly the right verification questions
After solving, see the reference solution side-by-side. 'What's different? Why?' — self-explanation makes the learning stick.
“Will you remember this in two weeks?”
Knowledge that fades before the interview is wasted effort.
Elsewhere
Progress = problems solved. Green checkmark. Done forever. No review, no decay. You solved it three months ago? Still "complete."
Mastery is tracked per concept — not per problem. It decays over time if you don't revisit. No false 'complete' status. You always know where you truly stand.
Coming: Struggle diagnosis that traces failures to root causes — not just wrong, but why
FSRS scheduling resurfaces concepts through different problems at the optimal interval. Not the same problem again — a new test of the same skill.
One number that tells you how prepared you are. Which core concepts you've mastered, where your gaps are, and what to focus on next.
Experienced grinders and beginners get different first experiences. We meet you where you are.
We celebrate mastering a concept, not logging in 30 days straight. Progress that matters, not vanity metrics.
Consistency without anxiety. '3 of 5 planned days this week' — not a streak counter that punishes missing one day.
Take a 5-minute diagnostic. We'll map your strengths and show you exactly what to focus on.