# PDF转换器 vs 羊毛堆

PDF转换器 and 羊毛堆 both sit at 5.0 stars, but that hides the real split: 100% of 羊毛堆's written reviews are positive against 15% of PDF转换器's. 羊毛堆 also leads on in-app purchases (none vs 5) and update cadence (every 5 days vs every 2 months). PDF转换器's advantage is iOS requirement (14.0 vs 26.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. PDF转换器 sells 5 in-app purchases, starting at $0.99 per 7 days. 羊毛堆 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for PDF转换器 against 5.0 for 羊毛堆. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews are what separate them: 15% of PDF转换器's written reviews are positive against 100% of 羊毛堆's.

PDF转换器 ships an update every 2 months, 羊毛堆 every 5 days. The most recent releases landed on October 27, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | PDF转换器 | 羊毛堆 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/pdf-pdfwordpdf/id1589891424/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/id6469572247/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 15.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Freemium | **Free** |
| Size | 39 MB | 9 MB |
| Requires iOS | **14.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oumi Information Technology Co., Ltd](https://appshunter.io/developer/1587540088) | [Beijing Travel To Future Technology Co., Ltd.](https://appshunter.io/developer/1661327152) |

## What reviewers say

### PDF转换器

[App page](https://appshunter.io/ios/app/pdf-pdfwordpdf/id1589891424)

Easily convert between multiple document formats, including PDF, Word, Excel, and PPT. Offers robust PDF editing, annotation, and scanning capabilities for efficient mobile document management.

**Highlights:** Multi-format document conversion (PDF, Word, Excel, PPT), High-quality, lossless conversion, PDF reading and editing, Annotation and markup tools, PDF scanning and import, Document management and sharing

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $0.99 | per 7 days |
| 月度订阅 | $3.99 | per month |
| 年度订阅 | $14.99 | per year |
| 终身会员 | $29.99 | one-time |
| 终身会员 | $39.99 | one-time |


### 羊毛堆

[App page](https://appshunter.io/ios/app/id6469572247)

This app helps users save money by finding coupons and tracking rebates for online purchases. It also curates deals on local services like food delivery and movie tickets, and automatically logs rebates for orders placed through the app.

**Highlights:** Find coupons and rebates, Track order rebates, Curated deals and freebies, Local service discounts, One-click platform jump

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF转换器 free?

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

### Is 羊毛堆 free?

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

### Which has better reviews, PDF转换器 or 羊毛堆?

PDF转换器 and 羊毛堆 are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do PDF转换器 or 羊毛堆 have ads?

Neither PDF转换器 nor 羊毛堆 shows ads.

### Which is updated more often, PDF转换器 or 羊毛堆?

PDF转换器 ships an update every 2 months, and 羊毛堆 every 5 days. Most recently, PDF转换器 was updated on October 27, 2026 and 羊毛堆 on October 30, 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.*