# Cryptography Concepts — Practice Offline Daily

> Practice Offline Daily (iPhone/iPad app by Tsuyoshi Sezaki.)

- Source: https://appshunter.io/ios/app/cryptography-concepts/id6773201710 (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: 2026-05-29
- Data updated: 2026-06-21
- User reviews in markdown: https://appshunter.io/ios/app/cryptography-concepts/id6773201710/reviews.md

## What is Cryptography Concepts?

Cryptography Concepts is an independent study app for learners who want to build practical understanding of crypto fundamentals, real-world usage, common mistakes, and advanced ideas.

Use it for self-paced review, interview prep, classroom reinforcement, or security upskilling.

- 160 practice questions across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts
- Every question includes an explanation
- FSRS spaced-repetition intervals to help schedule review
- Weak-point heatmap to show topics that need attention
- Daily challenge for consistent practice
- Mock exams for timed review
- Offline practice with no account setup

Practice offline, no login required.

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


## Version history (last 1 release)

### 1.0 — 2026-05-29

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 2026-06-21.*