Learn to code · Android
DevLab
Learn programming through live animations
Algorithms, Design Patterns, and Machine Learning — every step animated, synced across JS/Python/C++/Java. Understand and remember, great for interview prep.
- 2
- Tracks
- 50+
- Algorithms & Patterns
- 4
- Code languages
- Free
- Free
Two learning tracks
Algorithms & Design Patterns
Track 1
Algorithms
Sorting, searching, graphs, data structures — animated step by step, see exactly how data moves.
Track 2
Design Patterns
10 classic GoF patterns — flow diagrams + everyday scenes (restaurant, shop, classroom).
Track 3
Machine Learning
ML Pipeline, Training Loop, Fruit Classifier — understand how AI works through live animations.
What you can do
Deep understanding, lasting memory
Visual algorithms
Sorting (Bubble, Merge, Quick…), searching (Binary, Jump), graphs (Dijkstra, BFS, DFS), data structures (Stack, Queue, Linked List) — all animated step by step.
GoF Design Patterns
Singleton, Factory, Builder, Adapter, Decorator, Observer, Strategy, State, Command, Facade — each pattern has a diagram + everyday scene for clarity.
Code sync across 4 languages
Each illustration step shows JS, Python, C++, and Java code — see exactly how the algorithm runs in your preferred language.
Two view modes
Diagram mode for visual thinkers, Illustrated mode for those who prefer everyday examples — switch freely between them.
Interview prep friendly
Covers algorithms and data structures commonly asked in coding interviews — understand and remember through live animations.
Free, no ads
All content is free, no ads, no sign-in required. Start learning the moment you open the app.
Start learning today
Free on Google Play. No ads, no sign-in required.