# JSON Navigator vs Scan21

The clearest difference is review sentiment: JSON Navigator at 67% against Scan21's 0%. JSON Navigator also leads on rating (5.0 vs 2.3). Scan21's advantage is price ($1.99 vs $4.99) and iOS requirement (13.0 vs 15.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

JSON Navigator costs $4.99 and Scan21 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JSON Navigator holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 67% of JSON Navigator's written reviews are positive against 0% of Scan21's.

## The numbers

| Metric | JSON Navigator | Scan21 |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/json-navigator/id6740144978/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/scan21-age-id-check/id6751239834/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Paid | Paid |
| Best chart rank | **#92** | #126 |
| Size | 1 MB | 22 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chase Higgins](https://appshunter.io/developer/1788526218) | [TelliSIM - Travel eSIM solutions](https://appshunter.io/developer/1747738958) |

## What reviewers say

### JSON Navigator

[App page](https://appshunter.io/ios/app/json-navigator/id6740144978)

**Currently charting:** #92 Top Paid · Developer Tools (US App Store)

This tool transforms raw JSON API responses into an interactive, tree-like visual format. It helps developers, UX engineers, and designers easily explore and understand complex data structures with features like data type indicators and search functionality.

**Highlights:** Instant JSON visualization, Interactive tree view, Data type indicators, Search JSON responses, Expand/collapse nodes, Customizable themes

**Features:** macOS Compatibility, Safari Extension, Vision Pro support

**In-app purchases:** none


### Scan21

[App page](https://appshunter.io/ios/app/scan21-age-id-check/id6751239834)

**Currently charting:** #126 Top Paid · Developer Tools (US App Store)

Quickly verify if individuals meet the 21+ age requirement by scanning the barcode on their ID. Get instant visual and audio feedback for eligibility. Works offline and tracks scan history.

**Highlights:** Scan ID barcodes with device camera, Automatic age calculation for 21+, Clear visual (green/red screen) feedback, Optional audio alerts, Scan history and statistics, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is JSON Navigator free?

JSON Navigator costs $4.99, with no in-app purchases.

### Is Scan21 free?

Scan21 costs $1.99, with no in-app purchases.

### Which has better reviews, JSON Navigator or Scan21?

JSON Navigator is rated higher. JSON Navigator averages 5.0 out of 5 from 2 ratings, while Scan21 averages 2.3 from 3 ratings.

### Do JSON Navigator or Scan21 have ads?

Neither JSON Navigator nor Scan21 shows ads.

### Which is more popular, JSON Navigator or Scan21?

JSON Navigator currently peaks at #92 in the App Store charts, and Scan21 at #126. Chart position reflects recent download velocity rather than total install base.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*