A pocket-sized DSA gym. Spaced repetition that knows what's broken, a skill tree that shows what unlocks next, and five interaction modes so you stop grinding the same problem and start understanding it.
LeetCode-style platforms hand you a 2,000-problem feed and a stopwatch. DSAlingo hands you a structured route, knows where you're soft, and pulls you back to it before you forget.
Every topic — arrays, hashing, two-pointers, sliding window, trees, graphs, recursion, DP — is a node. Edges show what unlocks next, what you've earned, and which branches are quietly decaying.
The system rotates the format based on your skill, your last miss, and how fresh the topic is. Same problem rarely shows up the same way twice.
Fast format checks. Used early in a topic.
Drag the algorithm into the right order.
Targeted holes in real working code.
Predict the output. Build mental simulators.
Full editor. Tests. Hints behind a paywall of tries.
Code mode supports the four languages most asked in interview loops.
An SM‑2 review loop schedules the next pass on every concept based on how solidly you nailed the last one. Concept cards explain the structure behind the answer — recall is built on pattern recognition, not trivia.
Misses fold back into the route. Long-term recalls space out automatically. You don't pick what to study — the algorithm does, and tells you why.
Streaks, weekly XP, leagues. Gamification done with restraint — pressure when you want it, off when you don't.
Same content graph, different traversal. Pick the one that matches what you're actually trying to do.
First serious pass through arrays, trees, graphs, recursion. Heavier on fill / arrange / trace before code-heavy reps.
Active interview cycles. Tight pacing, leaderboards, mock interviews, code-weighted lessons.
Compressed routes. Weak-topic resurfacing. Fewer onboarding steps.
One MCQ, no signup. The same routing logic schedules your follow-up after this — except the live app remembers.
Six more questions on sliding window are queued — plus a code rep, plus a concept card.
We're an algorithms-pilled, mobile-first team building DSAlingo nights and weekends. The waitlist is the alpha. We ship every two weeks and post the diff.
Something not listed? Hit [email protected] — replies in < 24h while we're small.
The waitlist is the front of the line. First wave gets the alpha, the founders chat, and the next year free.