JSON Tools vs HTMLSource
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JSON Tools
This app provides a robust JSON editor and viewer for mobile devices. It allows users to format, validate, explore, and convert JSON data directly on their iPhone or iPad, offering desktop-like editing features and privacy.
- Syntax highlighting and code folding
- Interactive tree and table views
- JSON Schema validation
- Convert JSON to multiple formats
- Generate model classes
- Side-by-side diffing
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A fast, private JSON editor and viewer for iPhone and iPad. Paste an API response, open a file or load a URL, then format, validate, explore and convert it without leaving your device. EDIT LIKE ON YOUR DESKTOP • Syntax highlighting, line numbers and code folding • Smart editing: brackets and quotes close themselves, closers line up, Backspace steps back a whole indent level • Keyboard toolbar with JSON keys, indent and outdent • Tabs, find and replace, undo and redo, and full iPad keyboard shortcuts EXPLORE YOUR DATA • Interactive tree view with search, JSONPath filters and Copy JSONPath • Table view shows arrays of objects as a spreadsheet-style grid • Side-by-side diff against another file, pasted text, an open tab or a URL 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 JSON • Errors point to the exact line CONVERT AND EXPORT • Pretty-print or minify with your preferred indentation • Convert JSON to YAML, XML, CSV, TSV, TOML, TOON, HTML, Markdown and Base64 • Generate model classes for Swift, Kotlin, Dart, TypeScript, Python, Java, C# and Go 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.
HTMLSource
View and edit the HTML source code of any website directly within Safari. This extension offers syntax highlighting, keyword searching, and immediate visual feedback for your edits.
- View HTML source code
- Edit HTML source code
- Immediate change preview
- HTML syntax highlighting
- Keyword searching in source
- Dark Mode support
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HTMLSource is a Safari Extension that helps you view and edit any website's HTML source code. Features: - View HTML source code - Edit HTML source code and see changes immediately Extras: - Dark Mode support - HTML syntax highlight - Keyword searching in HTML source code Steps to use HTMLSource: 1. Download HTMLSource from App Store 2. Open Safari 3. Go to any website 4. Click "Aa" or the Safari Extension icon in the search bar 5. Follow the instruction to enable HTMLSource 6. View or edit HTML source code
Screenshots
Verdict
The clearest difference is update cadence: HTMLSource at every 4 days against JSON Tools's every 2 weeks. HTMLSource also leads on price ($0.99 vs $2.99). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
JSON Tools costs $2.99 and HTMLSource $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
JSON Tools ships an update every 2 weeks, HTMLSource every 4 days. Both last shipped on November 3, 2026.
| Parameter | JSON Tools | HTMLSource |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | — | 3.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #108 | #85 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Mohammed Aadhil | Hao-Quan Liu |
Customer experience
JSON Tools
HTMLSource
In-app purchases
JSON Tools
No in-app purchases
HTMLSource
No in-app purchases
Questions
Is JSON Tools free?
Is HTMLSource free?
Do JSON Tools or HTMLSource have ads?
Which is updated more often, JSON Tools or HTMLSource?
Which is more popular, JSON Tools or HTMLSource?
Other comparisons
