# PDF Compressor vs Polaris MES

The clearest difference is in-app purchases: Polaris MES at none against PDF Compressor's 2. Polaris MES also leads on update cadence (monthly vs every 6 months) and iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. PDF Compressor sells 2 in-app purchases, starting at $7.99 per month. Polaris MES asks for nothing beyond the download.

PDF Compressor ships an update every 6 months, Polaris MES monthly. The most recent releases landed on October 15, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | PDF Compressor | Polaris MES |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-compressor-size-reducer/id6754800758/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 27 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Fenuku Kekeli](https://appshunter.io/developer/1822419894) | [Gram Power India Pvt. Ltd.](https://appshunter.io/developer/1657964250) |

## What reviewers say

### PDF Compressor

[App page](https://appshunter.io/ios/app/pdf-compressor-size-reducer/id6754800758)

This utility app quickly reduces the file size of PDFs by up to 90% while preserving quality. It offers adjustable compression levels and allows for batch processing, making it ideal for sharing and storage.

**Highlights:** Up to 90% size reduction, Adjustable compression levels, Batch processing, Offline use, Quality preservation, Instant results

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access for a month | $7.99 | per month |
| All Access for a year | $39.99 | per year |


### Polaris MES

[App page](https://appshunter.io/ios/app/polaris-mes/id6792663578)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Compressor free?

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

### Is Polaris MES free?

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

### Do PDF Compressor or Polaris MES have ads?

Neither PDF Compressor nor Polaris MES shows ads.

### Which is updated more often, PDF Compressor or Polaris MES?

PDF Compressor ships an update every 6 months, and Polaris MES monthly. Most recently, PDF Compressor was updated on October 15, 2026 and Polaris MES on October 29, 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.*