# PDF Tools vs Audio Compressor

The clearest difference is review sentiment: PDF Tools at 100% against Audio Compressor's 0%. PDF Tools also leads on rating (5.0 vs 3.0) and ads (none vs shown). Audio Compressor's advantage is in-app purchases (none vs 3). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Tools sells 3 in-app purchases, starting at $4.99 per month. Audio Compressor asks for nothing beyond the download.

PDF Tools holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: PDF Tools has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of PDF Tools's written reviews are positive against 0% of Audio Compressor's.

PDF Tools ships an update every 6 days, Audio Compressor weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | PDF Tools | Audio Compressor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (14 ratings)](https://appshunter.io/ios/app/pdf-tools-editor-and-converter/id6590461166/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/audio-compressor-mp3-reducer/id6748247625/reviews) |
| Number of ratings | **14** | 2 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | Freemium | **Ad-supported** |
| Size | 36 MB | 55 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vijay Kale](https://appshunter.io/developer/6799427475) | [Suman Sharma](https://appshunter.io/developer/1815967200) |

## What reviewers say

### PDF Tools

[App page](https://appshunter.io/ios/app/pdf-tools-editor-and-converter/id6590461166)

This app offers a comprehensive suite of tools for managing PDF documents. Easily convert images to PDF, split and merge files, add watermarks, signatures, and compress documents. It provides a user-friendly interface for efficient document handling.

**Highlights:** Split and merge PDF files, Convert images to PDF, Add watermarks and signatures, Compress PDF size, Unlock secured PDFs, Extract and delete pages, Convert PDF to text/image

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1 month) | $4.99 | per month |
| Premium (1 year) | $14.99 | per year |
| Premium (Lifetime) | $49.99 | one-time |


### Audio Compressor

[App page](https://appshunter.io/ios/app/audio-compressor-mp3-reducer/id6748247625)

Easily reduce the size of audio files like MP3, M4A, AAC, and WAV without sacrificing quality. This app offers batch processing, preview options, and various compression settings to save space and share audio faster.

**Highlights:** Compress multiple audio files, Preview before and after compression, Adjust compression level and bitrate, Apply fade in/out effects, Mono/Stereo conversion, Volume normalization, Batch processing

**In-app purchases:** none


## Frequently asked questions

### Is PDF Tools free?

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

### Is Audio Compressor free?

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

### Which has better reviews, PDF Tools or Audio Compressor?

PDF Tools is rated higher. PDF Tools averages 5.0 out of 5 from 14 ratings, while Audio Compressor averages 3.0 from 2 ratings.

### Do PDF Tools or Audio Compressor have ads?

Audio Compressor shows ads; PDF Tools does not.

### Which is updated more often, PDF Tools or Audio Compressor?

PDF Tools ships an update every 6 days, and Audio Compressor weekly. Most recently, PDF Tools was updated on October 30, 2026 and Audio Compressor on October 30, 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.*