Algorithms vs Codelet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Algorithms
Explore and learn about a wide range of algorithms through clear explanations and animations. Deepen your understanding with interactive simulation modes and discover algorithms related to encryption and security. This app offers a comprehensive journey into the world of computer science concepts.
- Animated algorithm explanations
- Interactive simulation mode
- Encryption and security algorithms
- Data structures explained
- Sorting algorithms
- Graph search algorithms
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Enjoy watching, trying, and learning with this guide to algorithms. The wide-ranging field of algorithms is explained clearly and concisely with animations. Deepen your understanding by exploring concepts in "Sim Mode". Also includes algorithms closer to home involving encryption and security. Come on, let's take a journey into the world of algorithms! ==== Categories and Included Topics ==== [ Sort ] Bubble Sort, Selection Sort, Insertion Sort, Heap Sort, Merge Sort, Quicksort [ Clustering ] k-means Algorithm [ List Search ] Linear Search, Binary Search [ Graph Search ] Breadth-First Search, Depth-First Search, Bellman-Ford, Dijkstra's Algorithm, A* algorithm [ Math ] Euclidian Algorithm, Primality Test [ Data Compression ] Run-Length Encoding, Huffman Coding [ Security ] Hash Functions, Shared-Key Cryptosystem, Public-Key Cryptosystem, Hybrid Cryptosystem, Diffie-Hellman Key Exchange, Message Authentication Codes, Digital Signatures, Digital Certificates [ Data Structures ] Lists, Arrays, Stacks, Queues, Hash Tables, Heaps, Binary Search Trees [ The Web ] PageRank [ Recursion ] Tower of Hanoi ==== Downloading and Viewing All of the Algorithms ==== This app is free to download. A portion of the app's topics can be viewed after choosing to "Purchase all algorithms". ==== On iPad ==== This app is also compatible for use on iPad, where it can be used in both horizontal and vertical orientations. ==== Supported languages ==== - English - Español (Spanish) - Português (Portuguese) - 中文 (简体字) (Chinese (Simplified)) - Русский (Russian) - 日本語 (Japanese) - 한국어 (Korean) The display language can be changed on the settings menu. ==== About VPP Compatible Version ==== We also provide Volume Purchase Program (VPP) compatible version as another app for educational institutions and companies. if need be, visit "Volume Purchase Program" (https://vpp.itunes.apple.com/) and search "Algorithms VPP".
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
Algorithms and Codelet both sit at 4.7 stars, but that hides the real split: 91% of Algorithms's written reviews are positive against 53% of Codelet's. Codelet's advantage is in-app purchases (none vs 1). On price, rating, ratings volume and update cadence 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. Algorithms sells 1 one-off in-app purchase. Codelet asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Algorithms against 4.7 for Codelet. Both are backed by a comparable volume of ratings — 101 and 127 respectively. Written reviews are what separate them: 91% of Algorithms's written reviews are positive against 53% of Codelet's.
Algorithms ships an update every 6 weeks, Codelet every 2 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.
| Parameter | Algorithms | Codelet |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (101 ratings) | 4.7 (127 ratings) — better |
| Positive reviews | 90.6% of reviews — better | 53.3% of reviews |
| Number of ratings | 101 | 127 — better |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.4 |
| Further details — not scored | ||
| Size | 32 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Moriteru Ishida | Codelet LLC |
Customer experience
Algorithms
Codelet
Bugs and requests
Algorithms
Requested features
11 requests- Add code examples (Python, C++, JS)
- Include time complexity (Big O notation)
- Add more algorithms
- Include AI-related algorithms (neural networks, reinforcement learning)
- Add propositional and set logic for programmers
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- Animated examples of algorithms used together
- Add more tech-related topics (data engineering, analytics, ML, DB architecture)
- Add more features
- Add algorithm practice sections
- Add Red-black tree
- Add machine learning algorithms
Codelet
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Algorithms
- All of the algorithms$2.99
Codelet
No in-app purchases
