# Algorithm Fundamentals — Drill Big-O Offline

> Drill Big-O Offline (iPhone/iPad app by Tsuyoshi Sezaki.)

- Source: https://appshunter.io/ios/app/algorithm-fundamentals/id6771634571 (this page in markdown: same URL + `.md`)
- Developer: [Tsuyoshi Sezaki](https://appshunter.io/developer/1886356149)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 38 MB
- Languages: American English
- Released: 2026-05-23
- Data updated: 2026-06-04
- User reviews in markdown: https://appshunter.io/ios/app/algorithm-fundamentals/id6771634571/reviews.md

## What is Algorithm Fundamentals?

Algorithm Fundamentals is an independent study app for building confidence with core computer science problem-solving skills. It is designed for students, self-taught developers, bootcamp learners, and interview candidates who want focused practice without distractions.

Study across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts, including big-O notation, sorting algorithms, search algorithms, recursion basics, command-line basics, version-control concepts, debugging techniques, and software testing basics.

Features:
- 160 practice questions
- FSRS spaced-repetition intervals
- Weak-point heatmap to spot topics that need review
- Daily challenge for consistent practice
- Mock exams for timed review
- Explanation included with every question
- Offline practice, no login required

Independent study app for Algorithm Fundamentals practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.

Privacy: Practice offline, no login required.


## Version history (last 1 release)

### 1.0 — 2026-05-23

No release notes.

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All apps by Tsuyoshi Sezaki: https://appshunter.io/developer/1886356149

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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 2026-06-04.*