# Big-O Cheat Sheet — Reference and Compare

> Reference for algorithm and data structure computational complexity with pseudocode and comparison. (iPhone/iPad app by Nawaf Abdullah.)

- Source: https://appshunter.io/ios/app/big-o-cheat-sheet/id1460360156 (this page in markdown: same URL + `.md`)
- Developer: [Nawaf Abdullah](https://appshunter.io/developer/1454174712)
- Category: Education, Utilities
- Price: $0.99
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 12.1 · 8 MB
- Languages: English
- Released: 2019-04-27
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/big-o-cheat-sheet/id1460360156/reviews.md

## What is Big?

Big-O has two lists for mainstream algorithms and data structures.

Every Algorithm or Data Structure contain its computational complexity details.

The algorithms section also contains a pseudocode example for every algorithm in the app.

You can sort Algorithms by Best, Average, or Worse performance. 

You can also sort data structures by Average or Worse Access, Search, Insertion, or Deletion performance.

You can add items from their lists to the comparison view, and have a table comparing different algorithm and data structure performances.

Each algorithm and data structure have a link to their wiki to learn more!

We will continue to add more Algorithms and Data Structures to Big-O in later builds.

For any requests, improvements, or bug reporting please email the developer or write a review.

## Key features

- Computational complexity details
- Pseudocode examples for algorithms
- Sortable algorithm and data structure lists
- Performance comparison view
- Links to external wikis
- Future updates planned


## Frequently asked questions about Big

### What is the Big-O Cheat Sheet app?

The Big-O Cheat Sheet app serves as a reference for common algorithms and data structures, detailing their computational complexity. It includes pseudocode examples for algorithms and allows users to compare performance metrics side-by-side.

### What kind of information does Big-O Cheat Sheet provide for algorithms?

For each algorithm, Big-O Cheat Sheet provides its computational complexity details for best, average, and worst performance scenarios. It also includes a pseudocode example for every algorithm.

### How can I compare different algorithms and data structures using Big-O Cheat Sheet?

You can add items from the algorithm and data structure lists to the comparison view. This creates a table that allows you to directly compare the performance metrics of different algorithms and data structures.

### Does Big-O Cheat Sheet offer links for further learning?

Yes, each algorithm and data structure listed in the app includes a link to its respective wiki page. This provides users with an easy way to learn more about the concepts presented.

### What devices is Big-O Cheat Sheet compatible with?

Big-O Cheat Sheet is compatible with iPhone, iPad, and iPod devices. It requires iOS 4.0 or later.

### How often is Big-O Cheat Sheet updated?

The app was last updated on April 27, 2019, with version 1.0. The developer plans to add more algorithms and data structures in future builds.

### What is the price of Big-O Cheat Sheet?

Big-O Cheat Sheet is a paid application, available for $0.99. There are no in-app purchases or advertisements mentioned.

### What is the age rating for Big-O Cheat Sheet?

Big-O Cheat Sheet has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

## Version history (last 1 release)

### 1.0 — 2019-04-27

No release notes.

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All apps by Nawaf Abdullah: https://appshunter.io/developer/1454174712

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*