# SwingControl Ⅲ vs PDF Slim

The clearest difference is in-app purchases: SwingControl Ⅲ at none against PDF Slim's 1. SwingControl Ⅲ also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.0). PDF Slim's advantage is update cadence (weekly vs every 14 months). On price and device support there is nothing between them.

Both are free to download. PDF Slim sells 1 one-off in-app purchase. SwingControl Ⅲ asks for nothing beyond the download.

SwingControl Ⅲ ships an update every 14 months, PDF Slim weekly. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SwingControl Ⅲ | PDF Slim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-slim-reduce-pdf-size/id6787603119/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Weekly** |
| Monetization | — | Ad-supported |
| Size | 3 MB | 14 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [小梅 苏](https://appshunter.io/developer/1141829061) | [MBG Studio](https://appshunter.io/developer/1401126212) |

## What reviewers say

### SwingControl Ⅲ

[App page](https://appshunter.io/ios/app/swingcontrol/id1258096066)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Slim

[App page](https://appshunter.io/ios/app/pdf-slim-reduce-pdf-size/id6787603119)

Reduce the size of your PDF files with adjustable quality settings. Save or share compressed documents directly from the application. Access detailed information about each PDF.

**Highlights:** Compress PDF files, Adjustable quality levels, Save compressed PDFs, Share instantly, View PDF details

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is SwingControl Ⅲ free?

SwingControl Ⅲ is free to download, with no in-app purchases.

### Is PDF Slim free?

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

### Do SwingControl Ⅲ or PDF Slim have ads?

PDF Slim shows ads; SwingControl Ⅲ does not.

### Which is updated more often, SwingControl Ⅲ or PDF Slim?

SwingControl Ⅲ ships an update every 14 months, and PDF Slim weekly. Most recently, SwingControl Ⅲ was updated on October 11, 2026 and PDF Slim on October 24, 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.*