JSON Master vs EgoCheck
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
EgoCheck
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Become the leader your team truly needs. Every meeting or situation tests a different leadership moment. EgoCheck helps you pause, log what actually happened, and see the pattern behind your choices: how supportive you were, how much airtime you took, and whether the team left with clarity. What you’ll love • A simple leadership snapshot after each meeting or situation — capture your style placement, your share of the discussion, next steps — and optional satisfaction with how you ran the meeting. • A dashboard that remembers for you — recent logs at a glance, so progress isn’t a vague feeling anymore. • Analytics when you’re ready to go deeper — style spread, engagement heatmaps by meeting type, leadership satisfaction trends, agenda completion — with optional filtering so you can learn by company context. Privacy-friendly by design. Your logs are yours. When iCloud is available, syncing helps you pick up where you left off across devices. Whether you’re new to leadership or refining a practiced style, EgoCheck is your calm, consistent space to improve. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: EgoCheck at none against JSON Master's shown. JSON Master's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and in-app purchases 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 EgoCheck sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.
| Parameter | JSON Master | EgoCheck |
|---|---|---|
| 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 | Every 9 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 41 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Tianjin Illuso Information Technology Co., Ltd. | Vaclav Pluhar |
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
EgoCheck
- Weekly Subscription$2.997 Days
- Monthly Subscription$6.991 Month
- Yearly Subscription$59.991 Year









