# Unit Converter Max vs PDF Fox

The clearest difference is review sentiment: Unit Converter Max at 88% against PDF Fox's 0%. Unit Converter Max also leads on update cadence (every 3 weeks vs every 2 months). PDF Fox's advantage is in-app purchases (none vs 1) and iOS requirement (15.1 vs 17.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Unit Converter Max sells 1 one-off in-app purchase. PDF Fox asks for nothing beyond the download.

Unit Converter Max ships an update every 3 weeks, PDF Fox every 2 months. The most recent releases landed on September 23, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Unit Converter Max | PDF Fox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (26 ratings)](https://appshunter.io/ios/app/unit-converter-max/id6747881604/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | **87.5% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 36 MB | 43 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rich Soft Co., Ltd](https://appshunter.io/developer/1499019813) | [Yasin Kuyu](https://appshunter.io/developer/1234723142) |

## What reviewers say

### Unit Converter Max

[App page](https://appshunter.io/ios/app/unit-converter-max/id6747881604)

This app offers fast and accurate conversions for over 30 unit categories and 150 world currencies. It features a clean interface, offline functionality, and light/dark modes, designed for travel, work, and everyday calculations.

**Highlights:** 30+ unit categories, 150+ world currencies, Offline unit conversion, Clean, easy-to-read interface, Light and dark mode, Fast and accurate results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Converter Lifetime | $4.99 | one-time |


### PDF Fox

[App page](https://appshunter.io/ios/app/pdf-fox/id6756534248)

This comprehensive toolkit offers a suite of PDF management features, including editing, scanning, signing, and conversion. It prioritizes user privacy by operating entirely offline, ensuring your documents remain on your device without requiring accounts or subscriptions.

**Highlights:** Offline PDF editing, OCR text recognition, Secure PDF signing, Document scanning, PDF merging and splitting, File compression, Password protection

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unit Converter Max free?

Unit Converter Max is free to download, with in-app purchases available.

### Is PDF Fox free?

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

### Do Unit Converter Max or PDF Fox have ads?

Neither Unit Converter Max nor PDF Fox shows ads.

### Which is updated more often, Unit Converter Max or PDF Fox?

Unit Converter Max ships an update every 3 weeks, and PDF Fox every 2 months. Most recently, Unit Converter Max was updated on September 23, 2026 and PDF Fox on June 5, 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.*