# Merge PDF vs PDF Compressor | Reduce Size

The clearest difference is update cadence: PDF Compressor | Reduce Size at every 3 weeks against Merge PDF's every 6 months. Merge PDF's advantage is iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Merge PDF sells 2 in-app purchases, starting at $4.99 per 7 days and PDF Compressor | Reduce Size sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Merge PDF ships an update every 6 months, PDF Compressor | Reduce Size every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Merge PDF | PDF Compressor | Reduce Size |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/merge-pdf-combine-pdf-and-split/id6755649844/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 45 MB | 23 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrii Kulchytskyi](https://appshunter.io/developer/1759867572) | [KELVIN SENANU WALLACE](https://appshunter.io/developer/1888050842) |

## What reviewers say

### Merge PDF

[App page](https://appshunter.io/ios/app/merge-pdf-combine-pdf-and-split/id6755649844)

Easily combine, split, rotate, and organize PDF files directly on your device. This app offers a complete set of tools for managing PDFs offline, ensuring your documents remain private and secure.

**Highlights:** Combine multiple PDF files, Split PDFs by page number or equal parts, Rotate pages by 90, 180, or 270 degrees, Delete unwanted pages, Rearrange page order, Insert blank or existing pages, View PDFs within the app, Offline processing

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Merge PDF Weekly with 3 days free | $4.99 | per 7 days |
| Merge PDF Yearly | $19.99 | per year |


### PDF Compressor | Reduce Size

[App page](https://appshunter.io/ios/app/pdf-compressor-reduce-size/id6761698467)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Access | $4.99 | per 7 days |
| All Access | $34.99 | per year |
| All Access Forever | $59.99 | one-time |


## Frequently asked questions

### Is Merge PDF free?

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

### Is PDF Compressor | Reduce Size free?

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

### Do Merge PDF or PDF Compressor | Reduce Size have ads?

Neither Merge PDF nor PDF Compressor | Reduce Size shows ads.

### Which is updated more often, Merge PDF or PDF Compressor | Reduce Size?

Merge PDF ships an update every 6 months, and PDF Compressor | Reduce Size every 3 weeks. Most recently, Merge PDF was updated on October 30, 2026 and PDF Compressor | Reduce Size 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.*