PDF Reader vs ChatterBox Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Reader
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.
- 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
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PDFelement - PDF Reader is a PDF reader using the latest technology. The newly connected Liquid Mode function allows you to enjoy the best reading experience. In addition, there are various annotation tools, file management, signature, Various functions such as cloud services can meet your PDF needs in work and study. PDF VIEWER • Liquid Mode gives you the best PDF reading experience • Star files to find them quickly • Easily locate recently accessed files in the "Recent" list. • Enter the page number to navigate to the desired page for viewing LIQUID MODE • Get the best PDF Reading experience with Liquid Mode • PDF document fully fits the mobile phone screen, no need to zoom in and out repeatedly. • Easily adjust brightness, font size,style, and spacing. ANNOTATE • Using Pencil to annotate like writing on the paper • Add text annotations, freely modify the text and background, border colors, choose the appropriate font and font size. • Supports many annotating tools like highlighting, underlining, squiggly lines, or strikethroughs. MANAGE • Move, merge, copy or delete files SIGNATURE • Enables handwritten signatures to be inserted anywhere within the document, while also offering the ability to zoom in and out for greater flexibility. • Built-in commonly used stamps CREATE • Quickly create completely blank PDF documents • Creat blank folders. SHARE • Sharing document content with others is just a click away with capture feature. • Select sentence(s) or pragraph(s) to share CLOUD SERVICE • PDF Reader supports uploading or downloading docs via computer, Wondershare document cloud and iCloud. Please note that this app only supports editing native PDF files. It does not support editing scanned or raster PDF. If you find you cannot edit text in PDF, please check if it is scanned PDF. Thank you! ---------------------------------------------------------------------------------------- Need HELP? Please contact us! We'll feedback to you ASAP. Email: pdfelement@wondershare.com Support Center: http://support.wondershare.com Forum: http://forum.pdf.wondershare.com Official Website: https://pdf.wondershare.com If you think this App helps you, your positive review in the App Store would be much appreciated.
ChatterBox Pro
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.
- 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
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ChatterBox Pro is a local-first AI workspace for iOS. Run compatible local models, manage GGUF files, sideload your own models, connect to remote endpoints, attach documents, use optional web search, tune generation settings, and export cleanly in text, Markdown, or PDF. Built for people who want more control over AI, ChatterBox Pro gives you flexible model choices without requiring a subscription. Use Apple Intelligence when available, run compatible local models on-device, or connect to user-configured services such as Ollama, LM Studio, or OpenAI-compatible endpoints. ChatterBox Pro is designed around control: - Choose local, remote, or Apple Intelligence where available - Manage downloaded and sideloaded models - Tune context, response length, and sampling settings - Attach documents and use relevant context - Export chats as text, Markdown, or PDF - Use optional memory across chats - Lock sensitive chats - Use off-the-record mode - Configure web search only when you want it AI responses may be inaccurate. Verify important information before relying on it. Model compatibility and performance vary by device, model, and settings.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | PDF Reader | ChatterBox Pro |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 4.3 (3.9K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 76.7% of reviews | — |
| Number of ratings | 3.9K — better | 1 |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 173 MB | 39 MB |
| Age rating | 4+ | 17+ |
| Developer | Wondershare Technology (Hunan) Co.,Ltd. | Tyler Paglia |
Bugs and requests
PDF Reader
Reported bugs
4 issues- 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
5 requests- 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
Not enough reviews yet to summarise bugs or requests.
In-app purchases
PDF Reader
No in-app purchases
ChatterBox Pro
No in-app purchases
Questions
Is PDF Reader free?
Is ChatterBox Pro free?
Which has better reviews, PDF Reader or ChatterBox Pro?
Do PDF Reader or ChatterBox Pro have ads?
Which is updated more often, PDF Reader or ChatterBox Pro?
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