# YunTeng vs PDF Reader

The clearest difference is rating: PDF Reader at 4.7 against YunTeng's 1.7. PDF Reader also leads on update cadence (every 8 days vs every 4 months) and review sentiment (37% vs 9%). YunTeng's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. PDF Reader sells 9 in-app purchases, starting at $3.99 per 7 days. YunTeng asks for nothing beyond the download.

PDF Reader holds the better App Store score, 4.7 against 1.7. That said, the two scores are not equally well evidenced: PDF Reader has 753 ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 9% of YunTeng's written reviews are positive against 37% of PDF Reader's.

YunTeng ships an update every 4 months, PDF Reader every 8 days. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | YunTeng | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.7 (21 ratings)](https://appshunter.io/ios/app/yunteng/id1035123996/reviews) | **[4.7 (753 ratings)](https://appshunter.io/ios/app/pdf-reader-editor-and-scanner/id6739480825/reviews)** |
| Number of ratings | 21 | **753** |
| Positive reviews | 9.1% of reviews | **37.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 8 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 118 MB |
| Requires iOS | **7.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ShenZhen Wllink Technology Co., Ltd.](https://appshunter.io/developer/1065212219) | [DAOWEI NETWORK TECHNOLOGY PTE.LTD.](https://appshunter.io/developer/1547755677) |

## What reviewers say

### YunTeng

[App page](https://appshunter.io/ios/app/yunteng/id1035123996)

This utility app helps prevent losing your camera device. It offers features like taking photos and videos, switching between front and rear cameras, and recording lost locations with warning sounds.

**Highlights:** Photo and video capture, Front/rear camera switching, Camera zoom functionality, Two-way anti-loss, Record lost location, Lost warning sound alert

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-editor-and-scanner/id6739480825)

This app provides comprehensive PDF management, including reading, editing, and scanning. It uses AI for intelligent document recognition, summarization, and conversion to various formats. Securely store and access your files in the cloud or from popular services.

**Highlights:** AI-powered PDF editing and summarization, Intelligent document scanning with OCR, Convert between PDF and other file formats, Annotate, sign, and fill PDF forms, Cloud storage integration (Google Drive, OneDrive), Merge, split, lock, and compress PDFs

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Week | $3.99 | per 7 days |
| One Week | $3.99 | per 7 days |
| One Week | $7.99 | per 7 days |
| One Week | $7.99 | per 7 days |
| One Month | $12.99 | per month |
| One Year | $49.99 | per year |
| One Year | $76.99 | per year |
| One Year | $76.99 | per year |
| Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is YunTeng free?

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

### Is PDF Reader free?

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

### Which has better reviews, YunTeng or PDF Reader?

PDF Reader is rated higher. YunTeng averages 1.7 out of 5 from 21 ratings, while PDF Reader averages 4.7 from 753 ratings.

### Do YunTeng or PDF Reader have ads?

PDF Reader shows ads; YunTeng does not.

### Which is updated more often, YunTeng or PDF Reader?

YunTeng ships an update every 4 months, and PDF Reader every 8 days. Most recently, YunTeng was updated on November 1, 2026 and PDF Reader 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.*