# Hey Why: SQL Explain Viewer — Understand MYSQL execute plan

> Understand MYSQL execute plan (iPhone/iPad app by JONGMIN CHOI.)

- Source: https://appshunter.io/ios/app/hey-why-sql-explain-viewer/id6759210914 (this page in markdown: same URL + `.md`)
- Developer: [JONGMIN CHOI](https://appshunter.io/developer/1871461547)
- Category: Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 17.6 · 17 MB
- Languages: American English
- Released: 2026-02-18
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/hey-why-sql-explain-viewer/id6759210914/reviews.md

## What is Hey Why?

Hey Why is a lightweight SQL EXPLAIN viewer for developers.
Run EXPLAIN on your MySQL database or paste EXPLAIN JSON to see why your query behaves the way it does.

• Explore execution plans by depth
• Instantly see full scans, filesort, and temporary tables
• Built for quick discussions without a laptop
• Local-only. No cloud. No tracking.


## Version history (last 1 release)

### 1.0.0 — 2026-02-18

No release notes.

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- [Hey Justin](https://appshunter.io/ios/app/hey-justin/id6758566636)
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- [Hey Action: REST API Client](https://appshunter.io/ios/app/hey-action-rest-api-client/id6758724073)

All apps by JONGMIN CHOI: https://appshunter.io/developer/1871461547

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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 2026-05-19.*