Computational Complexity vs Codelet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Interactive Big-O function graphs
- Live sorting algorithm demonstrations
- Visualizes algorithmic growth
- Source code available on Github
- Educational tool for computer science
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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!
Codelet
Prepare for technical interviews by identifying core coding patterns and analyzing your performance. Practice coding questions conveniently to improve your skills and pinpoint areas for growth.
- Identify core patterns
- Analyze approaches
- Track performance
- Identify improvement areas
- Practice coding questions
- Anytime, anywhere practice
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∙ Identify and analyze the core patterns and approaches ∙ View how well you’re doing and where you can improve ∙ Practice coding questions anywhere and anytime
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Verdict
The clearest difference is review sentiment: Computational Complexity at 100% against Codelet's 53%. Computational Complexity also leads on rating (5.0 vs 4.7) and iOS requirement (6.0 vs 13.4). Codelet's advantage is ratings volume (127 vs 4). On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Computational Complexity holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Codelet has 127 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 53% of Codelet's.
Computational Complexity ships an update every 3 months, Codelet every 2 months. The most recent releases landed on June 5, 2026 and August 13, 2026 respectively.
| Parameter | Computational Complexity | Codelet |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.7 (127 ratings) |
| Positive reviews | 100.0% of reviews — better | 53.3% of reviews |
| Number of ratings | 4 | 127 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 6.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 18 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrick Madden | Codelet LLC |
Customer experience
Computational Complexity
Codelet
In-app purchases
Computational Complexity
No in-app purchases
Codelet
No in-app purchases
