# SDK85 vs XML / JSON Viewer

The clearest difference is in-app purchases: SDK85 at none against XML / JSON Viewer's 1. SDK85 also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 6 weeks). XML / JSON Viewer's advantage is iOS requirement (13.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. XML / JSON Viewer sells 1 one-off in-app purchase. SDK85 asks for nothing beyond the download.

SDK85 ships an update every 2 weeks, XML / JSON Viewer every 6 weeks. The most recent releases landed on October 1, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | SDK85 | XML / JSON Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/sdk85/id6443719532/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 12 MB | 40 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Juergen Schuck](https://appshunter.io/developer/1616701349) | [Seiya.k](https://appshunter.io/developer/383021944) |

## What reviewers say

### SDK85

[App page](https://appshunter.io/ios/app/sdk85/id6443719532)

This app emulates the Intel SDK-85 System Design Kit, allowing users to program and execute 8085 machine code. It features a hexpad, seven-segment display, and a monitor program, with an optional TTY mode for more comfortable input.

**Highlights:** 8085 microprocessor emulation, Hexpad and seven-segment display UI, Monitor program for code entry/execution, TTY mode for serial terminal input, Code execution suspension to save battery, Play/pause button for resuming execution

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

**In-app purchases:** none


### XML / JSON Viewer

[App page](https://appshunter.io/ios/app/xml-json-viewer/id6753669541)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $2.99 | one-time |


## Frequently asked questions

### Is SDK85 free?

SDK85 is free to download, with no in-app purchases.

### Is XML / JSON Viewer free?

XML / JSON Viewer is free to download, with in-app purchases available.

### Do SDK85 or XML / JSON Viewer have ads?

XML / JSON Viewer shows ads; SDK85 does not.

### Which is updated more often, SDK85 or XML / JSON Viewer?

SDK85 ships an update every 2 weeks, and XML / JSON Viewer every 6 weeks. Most recently, SDK85 was updated on October 1, 2026 and XML / JSON Viewer on September 19, 2026.

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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.*