# Trees and Traversals — Practice CS Concepts Offline

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

- Source: https://appshunter.io/ios/app/trees-and-traversals/id6774362247 (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: 2026-06-08
- Data updated: 2026-06-29
- User reviews in markdown: https://appshunter.io/ios/app/trees-and-traversals/id6774362247/reviews.md

## What is Trees and Traversals?

Trees and Traversals is an independent study app for building confidence with tree data structures, traversal patterns, and the mistakes that appear in coding interviews, CS courses, and exam prep.

Study across 160 focused questions covering Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. Every question includes an explanation so you can understand why an answer is correct and where your reasoning needs work.

Features:
- FSRS spaced-repetition intervals for efficient review
- Weak-point heatmap to spot topics that need attention
- Daily challenge for steady practice
- Mock exams for timed review
- Offline practice for commutes, classrooms, and travel
- No login required

Use it to review preorder, inorder, postorder, level-order traversal, recursion, iterative stacks and queues, binary search trees, tree height, edge cases, and complexity reasoning.

Independent study app for Trees and Traversals 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 — 2026-06-08

No release notes.

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

## Related topics

[trees and traversals](https://appshunter.io/ios/topics/trees-and-traversals)

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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 2026-06-29.*