# PDF Reader vs Unit Converter & Dictionary

The clearest difference is rating: Unit Converter & Dictionary at 5.0 against PDF Reader's 4.0. PDF Reader's advantage is ratings volume (22 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. PDF Reader sells 2 in-app purchases, starting at $9.99 per 7 days and Unit Converter & Dictionary sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Unit Converter & Dictionary holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: PDF Reader has 22 ratings behind it against 1, so its average is the more settled of the two.

PDF Reader ships an update every 2 weeks, Unit Converter & Dictionary every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PDF Reader | Unit Converter & Dictionary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (22 ratings)](https://appshunter.io/ios/app/pdf-reader-ez-read-pdf/id6752860700/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unit-converter-and-dictionary/id6795361946/reviews)** |
| Number of ratings | **22** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 42 MB | 13 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [欣 翁](https://appshunter.io/developer/1748126630) | [Mikoto Gateway](https://appshunter.io/developer/6795057863) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-ez-read-pdf/id6752860700)

This utility app allows users to open and manage various file formats, including PDFs, Docs, PPTs, and Excels. It offers powerful search capabilities, clear viewing options with annotation browsing, and easy sharing and printing of documents. Enjoy a high-speed, stable experience with a convenient night mode for reading in low light.

**Highlights:** Full-text PDF search, Annotation browsing, Outline support, Document sharing and printing, High-speed viewing, Night mode

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| weekly | $9.99 | per 7 days |
| yearly | $29.99 | per year |


### Unit Converter & Dictionary

[App page](https://appshunter.io/ios/app/unit-converter-and-dictionary/id6795361946)

This app offers comprehensive unit conversion across numerous categories, including specialized and traditional units. It also functions as a dictionary, explaining unit meanings, pronunciations, and providing fun facts. Real-time currency conversion is available, with an optional premium plan for AI assistance and ad removal.

**Highlights:** Extensive unit conversion categories, Unit dictionary with pronunciation and facts, Real-time currency conversion, Offline conversion capabilities, AI support for app usage (Premium), Traditional and specialized unit support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $0.99 | per month |


## Frequently asked questions

### Is PDF Reader free?

PDF Reader is free to download, with in-app purchases available.

### Is Unit Converter & Dictionary free?

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

### Which has better reviews, PDF Reader or Unit Converter & Dictionary?

Unit Converter & Dictionary is rated higher. PDF Reader averages 4.0 out of 5 from 22 ratings, while Unit Converter & Dictionary averages 5.0 from 1 ratings.

### Do PDF Reader or Unit Converter & Dictionary have ads?

Both PDF Reader and Unit Converter & Dictionary show ads.

### Which is updated more often, PDF Reader or Unit Converter & Dictionary?

PDF Reader ships an update every 2 weeks, and Unit Converter & Dictionary every 3 weeks. Most recently, PDF Reader was updated on October 30, 2026 and Unit Converter & Dictionary on October 31, 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.*