# Util Monster vs XML Viewer Converter JSON PDF

The clearest difference is review sentiment: Util Monster at 100% against XML Viewer Converter JSON PDF's 3%. Util Monster also leads on in-app purchases (none vs 4). XML Viewer Converter JSON PDF's advantage is rating (4.1 vs 2.8) and update cadence (fortnightly vs every 193 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. XML Viewer Converter JSON PDF sells 4 in-app purchases, starting at $11.99 per month. Util Monster asks for nothing beyond the download.

XML Viewer Converter JSON PDF holds the better App Store score, 4.1 against 2.8. That said, the two scores are not equally well evidenced: XML Viewer Converter JSON PDF has 122 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 100% of Util Monster's written reviews are positive against 3% of XML Viewer Converter JSON PDF's, so the app with the better star average is not the one people write more warmly about.

Util Monster ships an update every 193 months, XML Viewer Converter JSON PDF fortnightly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Util Monster | XML Viewer Converter JSON PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/util-monster-calculator/id392925219/reviews) | **[4.1 (122 ratings)](https://appshunter.io/ios/app/xml-viewer-converter-json-pdf/id1641792040/reviews)** |
| Number of ratings | 4 | **122** |
| Positive reviews | **100.0% of reviews** | 2.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 193 months | **Fortnightly** |
| Monetization | **Free** | Subscription |
| Size | 18 MB | 51 MB |
| Requires iOS | **13.0** | 14.0.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | +4 |
| Developer | [AD Lift Co., Ltd](https://appshunter.io/developer/1697835703) | [NEURASYNC](https://appshunter.io/developer/1639101560) |

## What reviewers say

### Util Monster

[App page](https://appshunter.io/ios/app/util-monster-calculator/id392925219)

This app consolidates 15 essential calculators for daily tasks, finance, health, and study into a single, user-friendly interface. It offers offline functionality, customization options, and quick access to frequently used tools.

**Highlights:** 15 practical calculators, Offline functionality, Categorized browsing and search, Favorites and recent tools, Customizable appearance and defaults, Supports English and Korean

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

**In-app purchases:** none


### XML Viewer Converter JSON PDF

[App page](https://appshunter.io/ios/app/xml-viewer-converter-json-pdf/id1641792040)

This app allows you to view, edit, convert, and validate XML files. It offers AI-powered XML code generation and converts files to PDF and JSON. Enjoy a user-friendly interface and flexible subscription options.

**Highlights:** View, edit, and save XML files, Convert XML to PDF and JSON, AI-powered XML code generation, Built-in XML validator, User-friendly interface

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access (Monthly) | $11.99 | per month |
| Pro Access (Annual) | $12.99 | per year |
| XML Lifetime Discount | $4.99 | one-time |
| XML Lifetime Premium Access | $7.99 | one-time |


## Frequently asked questions

### Is Util Monster free?

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

### Is XML Viewer Converter JSON PDF free?

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

### Which has better reviews, Util Monster or XML Viewer Converter JSON PDF?

XML Viewer Converter JSON PDF is rated higher. Util Monster averages 2.8 out of 5 from 4 ratings, while XML Viewer Converter JSON PDF averages 4.1 from 122 ratings.

### Do Util Monster or XML Viewer Converter JSON PDF have ads?

Neither Util Monster nor XML Viewer Converter JSON PDF shows ads.

### Which is updated more often, Util Monster or XML Viewer Converter JSON PDF?

Util Monster ships an update every 193 months, and XML Viewer Converter JSON PDF fortnightly. Most recently, Util Monster was updated on October 23, 2026 and XML Viewer Converter JSON PDF on October 24, 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.*