Comparison

Computational Complexity vs VisiGrab

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Computational Complexity

Explore fundamental concepts of computational complexity with interactive graphs and live sorting algorithm demonstrations. Developed by academics, this app offers a fun and educational way to visualize algorithmic growth and efficiency.

Highlights
  • Interactive Big-O function graphs
  • Live sorting algorithm demonstrations
  • Visualizes algorithmic growth
  • Source code available on Github
  • Educational tool for computer science
Features
Read full description

This app demonstrates the basic principles of computational complexity. The growth of a few typical Big-O functions are illustrated with an interactive graph, and live demonstrations of sorting algorithms can be run using randomly generated data. This app was developed at SUNY Binghamton, by Prof. Patrick H. Madden. Version 1.1 is an expansion on this, with the assistance a few students (primarily Keith Gardner, and undergrad, and Anthony Canino, an MS grad). We're working on the app as a fun project, and as a way to introduce ACM student group members to iOS programming. The source for the app is available on Github; we'll be adding more algorithms and things, and if you're interested in helping out with the development, let us know! https://github.com/keithgardner2/complexity Yay computational complexity! Yay Hartmanis and Stearns!

About

VisiGrab

This app offers an interactive, visual guide to mastering algorithms and data structures. It transforms complex concepts into intuitive experiences with dynamic visualizations and step-by-step explanations. Prepare for technical interviews and enhance your coding skills with comprehensive coverage and code examples.

Highlights
  • Interactive visualizations
  • Step-by-step algorithm unfolding
  • Comprehensive DSA coverage
  • Code examples in Python and Java
  • Gamified learning
  • Offline access
  • Lifetime access
Read full description

Searching for the perfect DSA companion? Look no further! VisiGrab is your interactive, visual guide to mastering algorithms and data structures — transforming complex concepts into intuitive, easy-to-understand experiences. Ace your next technical interview and level up your coding skills with our comprehensive learning platform. Visualize & Conquer DSA Tired of dry textbooks and confusing lectures? VisiGrab brings algorithms and data structures to life with dynamic visualizations. Watch algorithms unfold step-by-step, manipulate data interactively, and gain a deep, intuitive understanding of core DSA principles. Learn faster, retain more, and finally grasp those tricky concepts. Comprehensive DSA Coverage From fundamentals to advanced topics, VisiGrab has you covered: • Sorting: Bubble, Selection, Insertion, Quick, Merge, Heap • Data Structures: Arrays, Linked Lists, Stacks, Queues, Hash Tables, Trees, Graphs • Advanced Concepts: AVL Trees, Red-Black Trees, BFS, DFS, Dijkstra, Bellman-Ford, Minimum Spanning Trees (Prim & Kruskal), Union-Find • Graph Constructor: Build and visualize your own graphs interactively • Code Examples: Explore real implementations in Python and Java — C++ coming soon. Full source code available on GitHub Perfect for DSA Mastery 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 is your essential learning tool. Sharpen your problem-solving skills and build a solid foundation in algorithms and data structures. Ideal for LeetCode practice, competitive programming, and CS exam study. Why Choose VisiGrab? • Interactive Visualizations: Learn through hands-on exploration • Gamified Learning: Stay engaged and motivated with a gaming-inspired design • Offline Access: Study anytime, anywhere — no internet required • Available in 10 Languages: English, German, French, Spanish, Portuguese, Polish, Ukrainian, Japanese, Korean, and Chinese (Simplified) • Lifetime Access: One-time purchase — no subscriptions, no ads, no recurring fees Master DSA concepts and excel in your coding interviews. Download VisiGrab today and unlock your full programming potential!

Screenshots

Computational Complexity4 screens
VisiGrab4 screens

Verdict

The call

The clearest difference is in-app purchases: Computational Complexity at none against VisiGrab's 1. Computational Complexity also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 88%). VisiGrab's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (74 vs 4). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VisiGrab sells 1 one-off in-app purchase. Computational Complexity asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Computational Complexity holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: VisiGrab has 74 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Computational Complexity's written reviews are positive against 88% of VisiGrab's.

UpkeepUpdate frequency

Computational Complexity ships an update every 3 months, VisiGrab fortnightly. The most recent releases landed on June 5, 2026 and September 18, 2026 respectively.

Scorecard7 real differences · 3 level
Computational Complexity versus VisiGrab: the parameters behind the verdict, then further details
ParameterComputational ComplexityVisiGrab
PriceFreeFree
Rating5.0 (4 ratings) — better4.8 (74 ratings)
Positive reviews100.0% of reviews — better88.2% of reviews
Number of ratings474 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better15.0
Further details — not scored
Size18 MB304 MB
Age rating4+4+
DeveloperPatrick MaddenIevgen Ovsii

Customer experience

Computational Complexity

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

VisiGrab

All ratings74 ratings
Positive95.9%
Neutral2.7%
Negative1.4%
Written reviews17 reviews
Positive88.2%
Neutral5.9%
Negative5.9%

In-app purchases

None

Computational Complexity

No in-app purchases

1 purchases

VisiGrab

One-time1
  • Lifetime Access — All Content$6.99

Questions

Is Computational Complexity free?
Computational Complexity is free to download, with no in-app purchases.
Is VisiGrab free?
VisiGrab is free to download, with in-app purchases available.
Which has better reviews, Computational Complexity or VisiGrab?
Computational Complexity is rated higher. Computational Complexity averages 5.0 out of 5 from 4 ratings, while VisiGrab averages 4.8 from 74 ratings.
Do Computational Complexity or VisiGrab have ads?
Neither Computational Complexity nor VisiGrab shows ads.
Which is updated more often, Computational Complexity or VisiGrab?
Computational Complexity ships an update every 3 months, and VisiGrab fortnightly. Most recently, Computational Complexity was updated on June 5, 2026 and VisiGrab on September 18, 2026.

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