JSON Master vs CSV Viewer and Editor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JSON Master
This offline iOS tool formats, views, validates, and converts JSON data. It supports large files and offers privacy-safe, local processing for developers needing to debug API responses or transform data formats.
- Offline JSON formatting and beautifying
- Tree and text view for JSON visualization
- Instant JSON syntax validation
- JSON to CSV, XML, Excel conversion
- Large file support
- Import from clipboard and files
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JSON Master is a professional JSON Formatter / Viewer / Converter for developers (offline iOS tool). Three key points upfront: 100% offline processing, privacy-safe, large file support — your data is never uploaded to any server. Core Features (Developer Favorites): JSON Formatter & Beautifier: One-click format/beautify/minify, with syntax highlighting support. JSON Viewer: Tree View / Text views for clear structure visualization. JSON Validator: Instant syntax error detection (with line numbers) for quick API response debugging. Fast Converter: Bidirectional JSON ↔ CSV / XML / Excel (.xlsx) conversion. Large File Support: Smoothly open and edit large files. Import Anywhere: Import from Clipboard / Files for debugging anytime. Why Choose JSON Master? • Privacy First: All formatting, validation, and conversion happen locally on your device. • Focused & Distraction-Free: Clean interface with no redundant steps, perfect for quick data inspection and fixing. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://legal.rkvpxdr.com/privacy.html
CSV Viewer and Editor
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CSV Viewer and Editor is a offline CSV tool built for anyone who works with data on the go — developers, analysts, students, and business users. OPEN CSV FILES ANYWHERE • Open from Files, paste from clipboard, type manually, or fetch from a URL • Auto-detects delimiters: comma, semicolon, tab, and pipe • Detects headers automatically — no setup needed • Resume your last session instantly VIEW & EXPLORE DATA • Interactive table view with column sorting and row search • Raw view with line numbers and syntax highlighting • Stats at a glance — row count, column count, empty rows, unique values • Per-column statistics: min, max, average, sum for numeric data • Jump to any row instantly EDIT WITH PRECISION • Tap any cell to edit its value • Add or delete rows and columns • Full text editor mode for bulk changes • Auto-fixes malformed CSV — pads short rows, repairs unclosed quotes COMPARE & DIFF • Side-by-side comparison of two CSV files • Color-coded diff results: added, removed, changed, unchanged • Track changes down to the cell level — no other mobile CSV app does this CHARTS & VISUALIZATION • Bar charts, line charts, and pie charts from your data • Auto-detects numeric columns for instant charting • Tooltips, grid lines, and axis labels included EXPORT & CONVERT • Export to PDF, Excel (.xlsx), CSV, TSV • Convert to JSON or XML with one tap • Share or print directly from the app 10 READY-MADE TEMPLATES • Contacts, Sales Data, Inventory, Student Grades, Employee Directory, Server Logs, Weather Data, Budget Tracker, API Endpoints, and a blank grid BUILT FOR DAILY USE • Dark mode, light mode, or match your system • 16 languages supported • History and favorites to find your files fast • Day streak and file counter to track your usage • Works 100% offline — your data never leaves your device SUBSCRIPTION AND PRICING • csvvedit Pro Lifetime — $9.99, one payment • csvvedit Pro Monthly — $1.99 per month, renews automatically • Payment is charged to your Apple Account at confirmation of purchase • A subscription renews unless it is cancelled at least 24 hours before the end of the current period • Manage or cancel anytime in your Apple Account settings Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cosmovex.web.app/apps/csvvedit/privacy-policy
Screenshots
Verdict
The clearest difference is ads: CSV Viewer and Editor at none against JSON Master's shown. JSON Master's advantage is update cadence (every 9 days vs every 6 months). On price, in-app purchases, device support and iOS requirement 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
Both are free to download. JSON Master sells 3 in-app purchases, starting at $2.99 per 7 days and CSV Viewer and Editor sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
JSON Master ships an update every 9 days, CSV Viewer and Editor every 6 months. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.
| Parameter | JSON Master | CSV Viewer and Editor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 9 days — better | Every 6 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 41 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Tianjin Illuso Information Technology Co., Ltd. | Sahana A S |
In-app purchases
JSON Master
- JSON Master Pro (Weekly)3 Days trial$2.997 Days
- Pro (Yearly)$14.991 Year
- JSON Master Pro Lifetime$17.99
CSV Viewer and Editor
- csvvedit Pro Monthly$1.991 Month
- csvvedit Pro Lifetime$9.99
Questions
Is JSON Master free?
Is CSV Viewer and Editor free?
Do JSON Master or CSV Viewer and Editor have ads?
Which is updated more often, JSON Master or CSV Viewer and Editor?
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