# JSON Navigator vs Assembly Lab

The clearest difference is review sentiment: Assembly Lab at 100% against JSON Navigator's 67%. JSON Navigator's advantage is update cadence (every 2 weeks vs monthly) and price ($0.99 vs $1.99). On ads, in-app purchases, monetization model and chart position there is nothing between them.

JSON Navigator costs $0.99 and Assembly Lab $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

JSON Navigator ships an update every 2 weeks, Assembly Lab monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | JSON Navigator | Assembly Lab |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/json-navigator/id6740144978/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Paid | Paid |
| Best chart rank | **#106** | #161 |
| Size | 1 MB | 14 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Chase Higgins](https://appshunter.io/developer/1788526218) | [Chongqing Hyperits Network Technology Co., Ltd.](https://appshunter.io/developer/1866276929) |

## What reviewers say

### JSON Navigator

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

**Currently charting:** #106 Top Paid · Developer Tools (US App Store)

This app transforms JSON data into interactive, visualized trees directly within Safari. It offers instant visualization, data type indicators, and easy navigation through complex structures. Customize your viewing experience with light and dark themes.

**Highlights:** Instant JSON visualization, Interactive tree-view interface, Data type indicators, Expand/collapse nodes, Customizable light/dark themes

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

**In-app purchases:** none


### Assembly Lab

[App page](https://appshunter.io/ios/app/assembly-lab-8086-nasm-ide/id6757485881)

**Currently charting:** #161 Top Paid · Developer Tools (US App Store)

This app provides a powerful x86 16-bit real mode assembly language simulator and debugger for mobile devices and Mac. It offers real-time disassembly, register monitoring, memory browsing, and BIOS/DOS interrupt support for learning and practicing low-level programming.

**Highlights:** x86 16-bit CPU emulation, NASM syntax assembler, Real-time disassembly, Breakpoint debugging, Register and memory monitoring, BIOS/DOS interrupt support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JSON Navigator free?

JSON Navigator costs $0.99, with no in-app purchases.

### Is Assembly Lab free?

Assembly Lab costs $1.99, with no in-app purchases.

### Do JSON Navigator or Assembly Lab have ads?

Neither JSON Navigator nor Assembly Lab shows ads.

### Which is updated more often, JSON Navigator or Assembly Lab?

JSON Navigator ships an update every 2 weeks, and Assembly Lab monthly. Most recently, JSON Navigator was updated on October 25, 2026 and Assembly Lab on October 25, 2026.

### Which is more popular, JSON Navigator or Assembly Lab?

JSON Navigator currently peaks at #106 in the App Store charts, and Assembly Lab at #161. Chart position reflects recent download velocity rather than total install base.

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