# PDF Master vs 转盘鸭

The clearest difference is ads: PDF Master at none against 转盘鸭's shown. PDF Master also leads on iOS requirement (13.0 vs 15.0). 转盘鸭's advantage is update cadence (every 2 weeks vs every 2 months). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. PDF Master sells 13 in-app purchases, starting at $2.99 per 7 days and 转盘鸭 sells 6 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for PDF Master against 5.0 for 转盘鸭. Both are backed by a comparable volume of ratings — 3 and 2 respectively.

PDF Master ships an update every 2 months, 转盘鸭 every 2 weeks. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | PDF Master | 转盘鸭 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/pdf-master-editor-and-scanner/id1606486950/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/ai/id6670562588/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 27 MB | 98 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shellmob](https://appshunter.io/developer/1573900492) | [俊銮 褚](https://appshunter.io/developer/1765933115) |

## What reviewers say

### PDF Master

[App page](https://appshunter.io/ios/app/pdf-master-editor-and-scanner/id1606486950)

This app is a comprehensive PDF tool for iPhone and iPad users. It offers editing, conversion, scanning, reading, and signing capabilities in a single, user-friendly interface. Streamline your document management for work, study, or daily tasks.

**Highlights:** Professional PDF editing and annotation, Convert PDFs to/from Word, Excel, PPT, Images, TXT, HD mobile scanner with OCR, Image to PDF conversion, Smooth PDF reader and file manager, Electronic and handwritten signatures

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Converter Premium Weekly | $2.99 | per 7 days |
| PDF Converter Premium Monthly | $3.99 | per month |
| PDF Converter Premium quarter | $4.99 | per 3 months |
| PDF Photos Premium Monthly | $4.99 | per month |
| PDF Converter Premium Yearly | $9.99 | per year |
| PDF Photos Premium Quarterly | $9.99 | per 6 months |
| PDF Photos Premium Yearly | $9.99 | per year |
| PDF Photos Premium Yearly | $12.99 | per year |
| PDF Photos Premium Yearly | $19.99 | per year |
| PDF Converter Premium Yearly | $25.99 | per year |
| PDF Converter Premium Lifetime | $14.99 | one-time |
| PDF Converter Premium Lifetime | $19.99 | one-time |
| PDF Converter Premium Lifetime | $29.99 | one-time |


### 转盘鸭

[App page](https://appshunter.io/ios/app/ai/id6670562588)

This app helps you make decisions with a variety of fun tools like spinning wheels, dice rolling, and coin flips. It offers AI-powered recommendations and features like blind box reveals and virtual "knock the wooden fish" for entertainment. Designed to combat indecisiveness and add a touch of surprise to daily life.

**Highlights:** AI-powered decision recommendations, Spinning wheel for choices, Dice rolling simulation, Coin flip with scoring, Blind box reveals, Virtual 'knock the wooden fish', Random number generation

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包周 | $0.99 | per 7 days |
| 连续包月 | $1.99 | per month |
| 连续包年 | $7.99 | per year |
| 连续包年 | $14.99 | per year |
| 永久会员 | $14.99 | one-time |
| 永久会员 | $19.99 | one-time |


## Frequently asked questions

### Is PDF Master free?

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

### Is 转盘鸭 free?

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

### Which has better reviews, PDF Master or 转盘鸭?

PDF Master and 转盘鸭 are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do PDF Master or 转盘鸭 have ads?

转盘鸭 shows ads; PDF Master does not.

### Which is updated more often, PDF Master or 转盘鸭?

PDF Master ships an update every 2 months, and 转盘鸭 every 2 weeks. Most recently, PDF Master was updated on October 26, 2026 and 转盘鸭 on October 20, 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.*