# Computational Complexity vs VisiGrab

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.

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

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.

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

## The numbers

| Metric | Computational Complexity | VisiGrab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/computational-complexity/id788314470/reviews)** | [4.8 (74 ratings)](https://appshunter.io/ios/app/visigrab-algorithms-and-dsa/id1484525469/reviews) |
| Number of ratings | 4 | **74** |
| Positive reviews | **100.0% of reviews** | 88.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 304 MB |
| Requires iOS | **6.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Patrick Madden](https://appshunter.io/developer/857040151) | [Ievgen Ovsii](https://appshunter.io/developer/1484523214) |

## What reviewers say

### Computational Complexity

[App page](https://appshunter.io/ios/app/computational-complexity/id788314470)

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:** macOS Compatibility

**In-app purchases:** none


### VisiGrab

[App page](https://appshunter.io/ios/app/visigrab-algorithms-and-dsa/id1484525469)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access — All Content | $6.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*