Algorena - Learn Algorithms
No in-app products collected for this app.
| Rating | |||
|---|---|---|---|
| United Arab Emirates | <1%0 | — | |
| Afghanistan | <1%0 | — | |
| Antigua And Barbuda | <1%0 | — | |
| Anguilla | <1%0 | — | |
| Albania | <1%0 | — | |
| Armenia | <1%0 | — | |
| Angola | <1%0 | — | |
| Argentina | <1%0 | — | |
| Australia | <1%0 | — | |
| Azerbaijan | <1%0 | — |
Description
Algorena teaches algorithms the way they actually make sense: by moving.
Every lesson is the same four steps. Watch the algorithm run, step by step, with every decision narrated. Then the machine stops mid-execution and asks you to call the next move — which cell does binary search look at now? Which neighbor does the queue serve? You answer, you find out immediately, and a wrong answer tells you exactly which idea slipped. Then three questions prove you understood the concept, not just the animation.
Nothing here is a video. Every animation is the real algorithm executing on real data, generated fresh each time you practice — so you can never memorize a run.
WHAT YOU LEARN
58 skills across 18 tracks, from linear search to A* pathfinding
Free forever: arrays and search, two pointers and sliding window, prefix sums, the first sorts, stacks, queues and linked lists — 15 complete lessons, full quality, no teasers
Pro adds the advanced 43: merge and quick sort, heaps, radix, Timsort, hash tables, Bloom filters, LRU caches, BSTs, BFS and DFS, Dijkstra, topological sort, union-find, Kruskal, Prim, Bellman-Ford, Floyd-Warshall, recursion and backtracking, dynamic programming, flood fill, A*, KMP, Rabin-Karp, Boyer-Moore, tries, Huffman coding, minimax, alpha-beta pruning, quadtrees, convex hulls and Monte Carlo
HOW IT WORKS
See — the algorithm runs on a live stage, with pseudocode highlighting the exact line executing
Predict — the run pauses at every real decision point and hands you the wheel
Understand — miss one and you get the specific misconception, not a red X
Prove it — three concept questions close every lesson
A COACH THAT ACTUALLY WATCHES
Algorena remembers which mistakes you repeat — not how many, but which kind. "You've been eliminating the half the target is actually in." Then it offers a three-round drill on exactly that. The Daily 5 mixes five skills a day, weakest first.
BUILT FOR THE INTERVIEW, AND FOR AFTER IT
Mastery per skill, a rank that climbs with the whole curriculum, and a streak that only asks for five minutes.
ALGORENA PRO — $0.99, ONCE
All 43 advanced lessons
The Coach's drills across all 58 skills
Every future lesson — the curriculum grows, Pro owns all of it
No ads
One payment, yours forever, shareable with your family. No subscription. Ever.
PRIVACY, FOR REAL
No account. No sign-in. No analytics of our own. No servers. Your progress never leaves your phone — we couldn't see it if we wanted to. The free version is supported by ads, which appear only between sessions, never inside a lesson, and which Pro removes.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/