# PDF Reader vs ChatterBox Pro

The clearest difference is price: PDF Reader at Free against ChatterBox Pro's $4.99. PDF Reader also leads on ratings volume (3.9K vs 1) and iOS requirement (15.0 vs 26.0). ChatterBox Pro's advantage is rating (5.0 vs 4.3) and update cadence (every 5 days vs every 2 months). On ads, in-app purchases and device support there is nothing between them.

PDF Reader is free to download; ChatterBox Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ChatterBox Pro holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: PDF Reader has 3.9K ratings behind it against 1, so its average is the more settled of the two.

PDF Reader ships an update every 2 months, ChatterBox Pro every 5 days. The most recent releases landed on November 1, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | PDF Reader | ChatterBox Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.3 (3.9K ratings)](https://appshunter.io/ios/app/pdf-reader-pdfelement/id1150215996/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chatterbox-pro/id6769175911/reviews)** |
| Number of ratings | **3.9K** | 1 |
| Positive reviews | 76.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | **Free** | Paid |
| Size | 173 MB | 39 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Wondershare Technology (Hunan) Co.,Ltd.](https://appshunter.io/developer/1721309409) | [Tyler Paglia](https://appshunter.io/developer/1843265229) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-pdfelement/id1150215996)

This app offers a superior PDF reading experience with its innovative Liquid Mode, which optimizes documents for mobile screens. It also provides robust tools for annotating, signing, managing, and sharing your PDF files, catering to both work and study needs.

**Highlights:** Liquid Mode for optimized mobile reading, Annotation tools (pencil, text, highlighting), Handwritten signature insertion, File management (move, merge, copy, delete), Cloud service integration (Wondershare, iCloud), Create blank PDFs and folders

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient PDF editing
- 💡 Useful annotation tools
- 🚀 Convenient for students/professionals
- 👍 Great value for free app

**What reviewers complain about**

- 🐛 Crashes and glitches
- 🔒 Privacy concerns with account requirement
- 👎 Unintuitive user interface
- 🐛 Unreliable saving/syncing
- 👎 Limited functionality compared to paid version

**Reported bugs**

- Text boxes appearing randomly
- Inability to select/edit text in some PDFs
- Scrolling issues and page loading delays
- Incompatibility with certain PDF formats

**Requested features**

- Ability to edit text formatting (font, size, color)
- Support for multiple open documents
- Improved Apple Pencil integration
- Bookmark/favorite feature for frequently used PDFs
- Expanded cloud storage integration (OneDrive, Google Drive, etc.)


### ChatterBox Pro

[App page](https://appshunter.io/ios/app/chatterbox-pro/id6769175911)

This local-first AI workspace allows users to run compatible AI models on their device, manage model files, and connect to remote services. It offers flexible control over AI generation settings, document attachment, and various export options, all without a subscription.

**Highlights:** Run local AI models on-device, Manage GGUF and sideloaded models, Connect to remote AI endpoints, Attach documents for context, Tune generation settings, Export chats to text, Markdown, or PDF, Optional web search and memory

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Reader free?

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

### Is ChatterBox Pro free?

ChatterBox Pro costs $4.99, with no in-app purchases.

### Which has better reviews, PDF Reader or ChatterBox Pro?

ChatterBox Pro is rated higher. PDF Reader averages 4.3 out of 5 from 3.9K ratings, while ChatterBox Pro averages 5.0 from 1 ratings.

### Do PDF Reader or ChatterBox Pro have ads?

Neither PDF Reader nor ChatterBox Pro shows ads.

### Which is updated more often, PDF Reader or ChatterBox Pro?

PDF Reader ships an update every 2 months, and ChatterBox Pro every 5 days. Most recently, PDF Reader was updated on November 1, 2026 and ChatterBox Pro on October 18, 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.*