VisiGrab: Algorithms & DSA

Ievgen Ovsii

In-app purchases

About this app

VisiGrab is your interactive DSA visualizer — the easiest way to master algorithms and data structures through step-by-step visual animations. Whether you're a computer science student preparing for campus placement, a self-taught developer getting ready for tech interviews, or an experienced programmer brushing up on DSA concepts, VisiGrab makes learning algorithms intuitive and engaging.

🔍 Why VisiGrab?

Traditional ways of studying algorithms — textbooks, lectures, and video tutorials — often make it hard to truly understand how an algorithm works step by step. VisiGrab solves this by letting you watch each algorithm execute visually, interact with the data, and build deep understanding through hands-on exploration. Learn at your own pace, not at the speed of a video.

📚 Comprehensive DSA Coverage

Data Structures:
• Array
• Linked List
• Stack
• Queue
• Hash Table (chaining technique)
• Binary Search Tree (BST)
• AVL Tree
• Red-Black Tree
• Graph

Sorting Algorithms:
• Bubble Sort
• Selection Sort
• Insertion Sort
• Merge Sort
• Heap Sort
• Quick Sort

Tree Traversals:
• Pre-order traversal
• In-order traversal
• Post-order traversal
• Breadth-first traversal (BFS)
• Inserting and deleting nodes in BST
• Inserting and deleting nodes in AVL and Red-Black Trees

Graph Algorithms:
• Depth-first search (DFS)
• Breadth-first search (BFS)
• Dijkstra's algorithm (shortest path)
• Bellman-Ford algorithm
• Minimum Spanning Tree — Prim's algorithm
• Minimum Spanning Tree — Kruskal's algorithm
• Union-Find
• Graph Constructor — build and visualize your own graphs

Hash Table Operations:
• Inserting data into a hash table
• Deleting data from a hash table

💻 Code Examples in Java and Python — C++ Coming Soon

Every algorithm visualization is accompanied by its implementation code in both Java and Python, with C++ support coming soon. See the direct link between the code and the visual animation — understand not just what the algorithm does, but how the code makes it happen. Full source code available on GitHub.

🌍 Available in 10 Languages

VisiGrab supports English, German, French, Spanish, Portuguese, Polish, Ukrainian, Japanese, Korean, and Chinese (Simplified) — making it accessible to CS students worldwide.

🎯 Perfect for Coding Interview Preparation

Preparing for your next technical interview at a top tech company? VisiGrab helps you visualize and understand the DSA topics most commonly asked in coding interviews. Build a strong foundation in data structures and algorithms and go into your interview with confidence. Ideal for LeetCode practice, competitive programming preparation, and CS exam study.

🎮 Gamified Learning Experience

VisiGrab features a gaming-inspired design that makes studying algorithms fun and motivating. Interactive controls let you step through each algorithm at your own pace, manipulate data in real-time, and see results instantly.

✨ Key Features

• Interactive visual animations for every algorithm and data structure
• Step-by-step execution — pause, rewind, and control the pace
• Code view with Java and Python implementations
• Offline access — study anywhere, no internet required
• Gamified interface that keeps you engaged
• Comprehensive coverage from basic to advanced DSA topics
• One-time purchase — no subscriptions, no ads, no recurring fees
• Perfect study companion for CS courses, coding interviews, and competitive programming

📱 Learn DSA Anytime, Anywhere

Whether you're commuting, waiting between classes, or studying at home, VisiGrab turns your phone into a powerful algorithm learning tool. No internet connection needed — your complete DSA course is always available offline.

Download VisiGrab today and start mastering algorithms and data structures visually!

Ratings and reviews

Excellent app, great value! I'm a professional engineer, but learned mostly on the job, so I have a lot of gaps around algo/data struct/big O. I've been trying to learn and be able to name them all, and this app is awesome! What completely sold me on getting full access was the light bulb part on slide 17 of Arrays. That kind of granular information really helps me cement things together and it was wonderful to see that!

I don't want refund man but think of doing , the incorporation of explanation as a side hustle. I'm a complete beginner ik nothing about the process that's happening while doing pls say why and how we r doing, rather than just showing it done for example trees, u just add stuff but say it's lesser than XYZ so it's in left child and those please take it as a genuine feedback.

*Overall good but needs more work* I have bought the premium. It's that good. I like the app, the way it explains things. However there are some more improvements I hope to see from this app: First, please bring all the "under construction" data structures. Second, add others languages like C and C++ and maybe more. The standard languages are going to help a lot in learning more about the DSA and how it is applied in different languages.

What’s new

• Improved Topological Sort (Kahn's algorithm) visualisation
• Added Topological Sort to Graph Constructor