# PDF Slim vs byeWatch

The clearest difference is price: PDF Slim at Free against byeWatch's $2.99. PDF Slim also leads on device support (3 vs 1). byeWatch's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and iOS requirement there is nothing between them.

PDF Slim is free to download; byeWatch costs $2.99 up front. PDF Slim sells 1 one-off in-app purchase. byeWatch asks for nothing beyond the download.

PDF Slim ships an update weekly, byeWatch every 6 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | PDF Slim | byeWatch |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdf-slim-reduce-pdf-size/id6787603119/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 6 days** |
| Monetization | Ad-supported | — |
| Size | 14 MB | 31 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MBG Studio](https://appshunter.io/developer/1401126212) | [YOUNG SUK SOUL](https://appshunter.io/developer/1561601330) |

## What reviewers say

### 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 |


### byeWatch

[App page](https://appshunter.io/ios/app/byewatch/id6800200169)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Slim free?

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

### Is byeWatch free?

byeWatch costs $2.99, with no in-app purchases.

### Do PDF Slim or byeWatch have ads?

PDF Slim shows ads; byeWatch does not.

### Which is updated more often, PDF Slim or byeWatch?

PDF Slim ships an update weekly, and byeWatch every 6 days. Most recently, PDF Slim was updated on October 24, 2026 and byeWatch on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*