# Jeyso: JSON Diff & Formatter — Master Your Data Structure

> Master Your Data Structure (iPhone/iPad app by Umit UZ.)

- Source: https://appshunter.io/ios/app/jeyso-json-diff-and-formatter/id6758353863 (this page in markdown: same URL + `.md`)
- Developer: [Umit UZ](https://appshunter.io/developer/1842858860)
- Category: Developer Tools, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 5 MB
- Languages: American English
- Released: 2026-01-28
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/jeyso-json-diff-and-formatter/id6758353863/reviews.md

## What is Jeyso?

Master the art of data engineering with Jeyso, the premium JSON formatting studio designed for absolute focus and technical excellence. Whether you're debugging a complex API response or optimizing your data structures, Jeyso provides a sophisticated platform to manage your JSON through a high-fidelity, intuitive interface.

With advanced formatting modules and an intelligent validation framework, Jeyso eliminates the noise of cluttered developer apps. Experience a refined way to stay organized, featuring immersive history logs and high-fidelity project management that celebrates your technical achievements in a secure and professional environment.

KEY HIGHLIGHTS:

• Advanced JSON Formatting: Master your data with high-fidelity support for large JSON structures of up to 1,000,000 characters with absolute precision.
• Comprehensive Validation Studio: Validate and optimize your JSON through a streamlined, intuitive dashboard with customizable indentation controls.
• Intelligent History Framework: Monitor your data journey and revisit your projects with a high-fidelity log of up to 100 entries and 30-day retention.
• Mindful Developer Experience: A sleek, professional design optimized to reduce cognitive load and foster deep technical focus.
• Secure Data Registry: Document your JSON history and revisit your favorite structures with a high-fidelity history system.
• Privacy First: Your data is personal. Jeyso processes all your JSON locally on your device—we never access or share your private technical records.

WHY JEYSO?
Most JSON tools feel generic and cluttered. Jeyso is designed with care — smooth animations, high-fidelity technical interactions, a refined design system, and a formatting framework that's actually robust. It's the developer companion you'll keep coming back to.


## Version history (last 4 releases)

### 1.0.4 — 2026-07-02

We've fixed bugs, improved performance, enhanced code quality, and made various stability improvements to deliver a smoother experience.

### 1.0.2 — 2026-06-02

Bug fixes and performance improvements

### 1.0.1 — 2026-05-07

- Initial Release: Introducing Jeyso, your personal partner in data excellence.
- Complete JSON Suite: Access our full range of formatting, validation, and history management tools.
- Intelligent Progress Framework: Leverage our secure and high-fidelity history tracking system.
- Premium UI: A vibrant, professional design optimized for a seamless and focused developer experience.
- Version 1.0.1 alignment with branding refinements and updated legal links.

### 1.0.0 — 2026-01-28

No release notes.

## Apps similar to Jeyso

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [JSON Utilities](https://appshunter.io/ios/app/json-utilities/id1492933205) | — | Free | Developer Tools |
| [SymbolCraft: Developer Tool](https://appshunter.io/ios/app/symbolcraft-developer-tool/id6751123632) | — | Free | Developer Tools |
| [JSON Formatter Simple Parsing](https://appshunter.io/ios/app/json-formatter-simple-parsing/id6757746669) | — | Free | Developer Tools |
| [Accessible JSON Viewer](https://appshunter.io/ios/app/accessible-json-viewer/id6759308261) | — | Free | Developer Tools |
| [Structly - JSON Formatter](https://appshunter.io/ios/app/structly-json-formatter/id6753774575) | 5.0 (1) | Free | Developer Tools |
| [JSON Viewer & Editor](https://appshunter.io/ios/app/json-viewer-and-editor/id6758266023) | 5.0 (3) | Free | Developer Tools |

## More apps by Umit UZ

- [Meditea: Meditate & Gratitude](https://appshunter.io/ios/app/meditea-meditate-and-gratitude/id6753175736)
- [HabiFox: Daily Habit Tracker](https://appshunter.io/ios/app/habifox-daily-habit-tracker/id6754216934)
- [Manifest Your Reality: Mermaid](https://appshunter.io/ios/app/manifest-your-reality-mermaid/id6754261223)
- [Lynx: No Contact Rule Tracker](https://appshunter.io/ios/app/lynx-no-contact-rule-tracker/id6754301026)
- [Party & Event Planner: Festpar](https://appshunter.io/ios/app/party-and-event-planner-festpar/id6754349701)
- [Uvriex UV Index Safety Monitor](https://appshunter.io/ios/app/uvriex-uv-index-safety-monitor/id6754407783)

All apps by Umit UZ: https://appshunter.io/developer/1842858860

---

*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 2026-08-15.*