# Smart PDF Compressor vs PeekMD

The clearest difference is in-app purchases: Smart PDF Compressor at none against PeekMD's 3. Smart PDF Compressor also leads on iOS requirement (18.0 vs 26.0). PeekMD's advantage is update cadence (every 3 days vs every 9 days). On price, ads and device support there is nothing between them.

Both are free to download. PeekMD sells 3 one-off in-app purchases. Smart PDF Compressor asks for nothing beyond the download.

Smart PDF Compressor ships an update every 9 days, PeekMD every 3 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Smart PDF Compressor | PeekMD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Size | 1 MB | 3 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Quan Dang](https://appshunter.io/developer/1868401962) | [金苹 卢](https://appshunter.io/developer/1885537846) |

## What reviewers say

### Smart PDF Compressor

[App page](https://appshunter.io/ios/app/smart-pdf-compressor-reduce/id6757997785)

**Features:** macOS Compatibility

**In-app purchases:** none


### PeekMD

[App page](https://appshunter.io/ios/app/peekmd-markdown-html-viewer/id6775353195)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10次转换次数 | $0.99 | one-time |
| PeekMD PRO | $1.99 | one-time |
| 50次转换次数 | $2.99 | one-time |


## Frequently asked questions

### Is Smart PDF Compressor free?

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

### Is PeekMD free?

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

### Do Smart PDF Compressor or PeekMD have ads?

Neither Smart PDF Compressor nor PeekMD shows ads.

### Which is updated more often, Smart PDF Compressor or PeekMD?

Smart PDF Compressor ships an update every 9 days, and PeekMD every 3 days. Most recently, Smart PDF Compressor was updated on October 2, 2026 and PeekMD on October 10, 2026.

---

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