# Error Correcting Codes — Drill Concepts Offline

> Drill Concepts Offline (iPhone/iPad app by Tsuyoshi Sezaki.)

- Source: https://appshunter.io/ios/app/error-correcting-codes/id6773176303 (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: 2026-05-28
- Data updated: 2026-06-28
- User reviews in markdown: https://appshunter.io/ios/app/error-correcting-codes/id6773176303/reviews.md

## What is Error Correcting Codes?

Error Correcting Codes is an independent study app for learning and practicing coding theory at your own pace. It is built for students, engineers, interview candidates, and anyone reviewing fundamentals, practical skills, common pitfalls, and advanced concepts.

Practice with 160 questions covering key ideas in error detection, correction, redundancy, distance, decoding, linear codes, cyclic codes, and real-world tradeoffs. Every question includes an explanation so you can understand the reasoning, not just memorize answers.

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

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

Practice offline, no login required.


## Version history (last 1 release)

### 1.0 — 2026-05-28

No release notes.

## More apps by Tsuyoshi Sezaki

- [中小企業診断士合格ドリル](https://appshunter.io/ios/app/id6761160300)
- [簿記1級合格ドリル](https://appshunter.io/ios/app/1/id6761160381)
- [簿記3級 合格ドリル](https://appshunter.io/ios/app/3/id6761160384)
- [FP3級 合格ドリル](https://appshunter.io/ios/app/fp3/id6761160498)
- [危険物乙4 合格ドリル](https://appshunter.io/ios/app/4/id6761160536)
- [英語2級レベル対策ドリル](https://appshunter.io/ios/app/2/id6761160574)

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

---

*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 2026-06-28.*