# Soilsiu vs PDF Scanner

The clearest difference is in-app purchases: Soilsiu at none against PDF Scanner's 1. Soilsiu also leads on iOS requirement (13.4 vs 16.0). PDF Scanner's advantage is update cadence (every 8 days vs every 14 months). On price, ads and device support there is nothing between them.

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

Soilsiu ships an update every 14 months, PDF Scanner every 8 days. The most recent releases landed on October 12, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Soilsiu | PDF Scanner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 8 days** |
| Size | 18 MB | 28 MB |
| Requires iOS | **13.4** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [凯 陈](https://appshunter.io/developer/1631731460) | [GameChief FZ-LLC](https://appshunter.io/developer/1785613402) |

## What reviewers say

### Soilsiu

[App page](https://appshunter.io/ios/app/soilsiu/id6670735086)

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

**In-app purchases:** none


### PDF Scanner

[App page](https://appshunter.io/ios/app/pdf-scanner-text-to-speech/id6747193594)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads Unlock All Features | $4.99 | one-time |


## Frequently asked questions

### Is Soilsiu free?

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

### Is PDF Scanner free?

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

### Do Soilsiu or PDF Scanner have ads?

Neither Soilsiu nor PDF Scanner shows ads.

### Which is updated more often, Soilsiu or PDF Scanner?

Soilsiu ships an update every 14 months, and PDF Scanner every 8 days. Most recently, Soilsiu was updated on October 12, 2026 and PDF Scanner on November 8, 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.*