# Big-O \| Time Complexity — Practice Big O notation

> Practice Big O notation (iPhone/iPad app by Boris Emorine.)

- Source: https://appshunter.io/ios/app/big-o-time-complexity/id6739426793 (this page in markdown: same URL + `.md`)
- Developer: [Boris Emorine](https://appshunter.io/developer/640908622)
- Category: Education, Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 8 MB
- Languages: English
- Released: 2024-12-16
- Data updated: 2026-11-01

## What is Big?

# Big O Time Complexity Trainer

Master algorithmic time complexity through interactive practice. Perfect for computer science students, coding interview preparation, and developers looking to sharpen their skills.

Challenge yourself with carefully curated code snippets and learn to recognize different time complexity patterns. Whether you're preparing for technical interviews or deepening your understanding of algorithmic efficiency, Big-O Boss provides a focused, hands-on approach to mastering Big O notation.

KEY FEATURES:
• Interactive practice sessions with real code examples
• Detailed explanations for each answer, helping you understand where you went right or wrong
• Multiple difficulty levels to match your experience
• Customizable code themes to match your preferred IDE style
• Practice reminders to help build a consistent learning habit
• Clean, distraction-free interface designed for learning

Build confidence in analyzing time complexity through regular practice. Each example comes with comprehensive explanations that break down the reasoning behind the correct Big O notation, helping you develop intuition for algorithmic efficiency.

Perfect for:
• Computer Science students
• Preparing for coding interviews
• Professional developers refreshing their algorithm analysis skills
• Anyone learning data structures and algorithms

Download now and start building your algorithmic analysis skills one practice session at a time.

## Is Big safe?

Not enough ratings yet to assess Big.

## Is Big legit?

Big-O | Time Complexity is no longer available in the App Store. The AppsHunter Legitimacy Score for Big is 35 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.3 — 2024-12-29

- Minor fixes and improvements

### 1.2 — 2024-12-22

- Minor fixes and improvements

### 1.1 — 2024-12-16

- Fix minor dark mode bug

### 1.0 — 2024-12-16

No release notes.

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## More apps by Boris Emorine

- [Card Game Rules](https://appshunter.io/ios/app/card-game-rules/id641346234)
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All apps by Boris Emorine: https://appshunter.io/developer/640908622

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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 2026-11-01.*