# YAML Tools: Editor & Validator — JSON Schema, Convert & Diff

> Private mobile YAML editor for configuration files with validation, conversion, and diffing. (iPhone/iPad app by Mohammed Aadhil.)

- Source: https://appshunter.io/ios/app/yaml-tools-editor-and-validator/id6758571420 (this page in markdown: same URL + `.md`)
- Developer: [Mohammed Aadhil](https://appshunter.io/developer/1526081218)
- Category: Developer Tools, Utilities
- Price: $1.99 (on sale, was $3.99)
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.6 · 31 MB
- Languages: Chinese (Simplified, China), Japanese, Chinese (Traditional, Taiwan), American English, Korean
- Released: 2026-02-17
- Data updated: 2026-11-13
- Monetization: paid

## What is YAML Tools?

A fast, private YAML editor for iPhone and iPad. Write and fix Kubernetes manifests, Docker Compose files, GitHub Actions workflows and any other config, then validate, convert and compare it without leaving your device.

EDIT LIKE ON YOUR DESKTOP
• Syntax highlighting, line numbers and code folding
• Smart indentation: Enter indents after a key, Backspace steps back a whole level
• Keyboard toolbar with YAML keys, indent and outdent
• Tabs, find and replace, undo and redo, and full iPad keyboard shortcuts
• Multi-document files (---) fully supported

VALIDATE WITH JSON SCHEMA
• Built-in SchemaStore catalog covering hundreds of popular config files
• Use the schema your file declares, add one from a file or URL, or generate one from your YAML
• Errors point to the exact line

CONVERT AND EXPORT
• Format or minify with your preferred indentation
• Convert YAML to JSON, XML, CSV, TSV, TOML, TOON, HTML, Markdown and Base64
• Generate model classes for Swift, Kotlin, Dart, TypeScript, Python, Java, C# and Go

EXPLORE AND COMPARE
• Interactive tree view with search and Copy JSONPath
• Side-by-side diff against another file, pasted text, an open tab or a URL

PRIVATE BY DESIGN
Your documents are processed on your device and never uploaded. No account, no ads, no tracking. Open files from the Files app, iCloud Drive or a URL, and share results anywhere.

## Key features

- Syntax highlighting and code folding
- JSON schema validation
- Convert YAML to JSON, XML, CSV, and more
- Side-by-side file comparison
- Private, on-device processing
- Full iPad keyboard shortcuts

## Chart rankings

- #110 in Top Paid · Developer Tools (US App Store)

## Is YAML Tools safe?

Not enough ratings yet to assess YAML Tools.

## Is YAML Tools legit?

YAML Tools: Editor & Validator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for YAML Tools is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about YAML Tools

### What is YAML Tools?

YAML Tools is a private YAML editor for iPhone and iPad that allows you to write, validate, convert, and compare configuration files directly on your device. It offers features like syntax highlighting, JSON schema validation, and multiple export formats.

### Does YAML Tools have ads?

No, YAML Tools is designed to be private and does not contain any advertisements. Your documents are processed entirely on your device.

### What platforms is YAML Tools available on?

YAML Tools is available for iPhone, iPad, and iPod devices.

### How does YAML Tools handle privacy?

YAML Tools is private by design. All document processing occurs on your device, and your files are never uploaded. It does not require an account or use tracking.

### What file formats can YAML Tools convert to?

YAML Tools can convert YAML to JSON, XML, CSV, TSV, TOML, TOON, HTML, Markdown, and Base64. It can also generate model classes for various programming languages.

### How does the validation feature work in YAML Tools?

YAML Tools validates your YAML files using JSON Schema. It includes a built-in SchemaStore catalog and allows you to use declared schemas, add them from files or URLs, or generate one from your YAML. Errors are pinpointed to the exact line.

### What are the editing features in YAML Tools?

YAML Tools offers desktop-like editing with syntax highlighting, line numbers, code folding, smart indentation, and a keyboard toolbar. It also supports tabs, find and replace, undo/redo, and full iPad keyboard shortcuts.

### How often is YAML Tools updated?

The latest version of YAML Tools was released on November 11, 2026, indicating active development and updates. The app was last updated on this date.

## Version history (last 5 releases)

### 5.0 — 2026-11-11

• Multi-document YAML: files with --- separators now format, validate and display every document
• Backspace in indentation steps back a whole indent level, and the keyboard toolbar has a new outdent key
• Line-number gutter: tap a number to select its line, long-press for Copy Line, Fold and Unfold All
• Notifications no longer block the screen
• Fixed the keyboard covering dialogs on iPad

### 4.1 — 2026-07-14

Find & Replace - A built-in find-and-replace bar (⌘F)

Templates - Jump-start any session with 5+ curated starter YAML templates

Table View Revamp - Content-aware auto-sizing columns, theme-aware, and a view state that remembers your filters, sort, and frozen columns across edits.

Compare Mode - Diff any two documents side by side with color-coded additions, deletions, and edits, deep nested-object comparison, and one-tap navigation between changes.

Tree View Revamp - Cleaner, calmer rows that stay put when selected, GitHub-style type colors, a focused-node accent, and a streamlined inspector that keeps every action one tap away.

### 4.0 — 2026-06-25

Find & Replace - A built-in find-and-replace bar (⌘F)

Templates - Jump-start any session with 5+ curated starter YAML templates

Table View Revamp - Content-aware auto-sizing columns, theme-aware, and a view state that remembers your filters, sort, and frozen columns across edits.

Compare Mode - Diff any two documents side by side with color-coded additions, deletions, and edits, deep nested-object comparison, and one-tap navigation between changes.

Tree View Revamp - Cleaner, calmer rows that stay put when selected, GitHub-style type colors, a focused-node accent, and a streamlined inspector that keeps every action one tap away.

### 3.0 — 2026-06-11

Version 3.0 is the biggest update yet, bringing schema validation, a redesigned file workflow, and a faster, more polished editor.

• JSON Schema Validation: Validate YAML against JSON Schema right inside the app. Pick a schema once and it stays attached to your file with live error reporting.

• Open YAML files directly from anywhere: Tap any .yaml or .yml file in Mail, Files, Safari, or other apps to open it instantly in YAML Tools. Explore, format, and transform your YAML without extra steps.

• Recent Files: A new jump-list sheet remembers the last files you opened. Tap to reopen, even files stored outside the app on iOS.

• Native iOS Document Picker: All-new native file open/save experience with proper security-scoped bookmarks, so files from iCloud Drive, the Files app, and external providers just work.

• Redesigned Action Toolbars: Grouped floating action clusters on every screen for cleaner reachability and a more focused workspace.

• Sharper Code Editor: JetBrains Mono for code, refined line numbers, a streamlined keyboard toolbar, and a cleaner syntax highlighter across all formats.

• Polished iOS Theme: Refreshed light and dark themes with better contrast, smoother surfaces, and tighter visual rhythm.

• Performance: Schema validation runs off the main thread, so larger files validate without freezing the UI.

### 2.0 — 2026-05-07

Multi-Tab Support: Work with multiple YAML files simultaneously without switching windows. Open and edit files side by side in dedicated tabs, keeping your workflow smooth and organized.
Direct File Access: Open YAML files directly from your device storage or file manager. No more import/export.
Refreshed UI: A cleaner, more intuitive interface that gets out of your way. Improved layout, better readability, and a polished look.

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## More apps by Mohammed Aadhil

- [JSON Tools: Viewer & Formatter](https://appshunter.io/ios/app/json-tools-viewer-and-formatter/id1526081216)
- [JSON to XML Converter](https://appshunter.io/ios/app/json-to-xml-converter/id1545730388)
- [XML Tools: Editor & Validator](https://appshunter.io/ios/app/xml-tools-editor-and-validator/id6758571472)
- [TOON Tools](https://appshunter.io/ios/app/toon-tools/id6758571577)
- [Encoder Tools](https://appshunter.io/ios/app/encoder-tools/id6787344539)

All apps by Mohammed Aadhil: https://appshunter.io/developer/1526081218

## Related topics

[yaml tools](https://appshunter.io/ios/topics/yaml-tools) · [yaml viewer](https://appshunter.io/ios/topics/yaml-viewer) · [yaml editor](https://appshunter.io/ios/topics/yaml-editor)

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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 2026-11-13.*