# Recursion Concepts — Practice 160 Qs Offline

> Practice 160 Qs Offline (iPhone/iPad app by Tsuyoshi Sezaki.)

- Source: https://appshunter.io/ios/app/recursion-concepts/id6773989553 (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: 2026-06-03
- Data updated: 2026-07-24
- User reviews in markdown: https://appshunter.io/ios/app/recursion-concepts/id6773989553/reviews.md

## What is Recursion Concepts?

Recursion Concepts is an independent study app for building confidence with recursive thinking, from first principles to advanced problem patterns. It is designed for students, self-taught programmers, interview prep, and anyone who wants focused practice without account setup.

Study across four topic areas: Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts.

- 160 practice questions
- Every question includes an explanation
- FSRS spaced-repetition intervals to help reviews stick
- Weak-point heatmap to show where to focus next
- Daily challenge for steady practice
- Mock exams for timed review
- Offline practice with no login required

Use it to review base cases, call stacks, divide-and-conquer patterns, tree traversal, backtracking, memoization, termination errors, and common recursive debugging traps.

Independent study app for Recursion 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.

Practice offline, no login required.


## Version history (last 1 release)

### 1.0 — 2026-06-03

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 2026-07-24.*