ChatDOC vs ChatPDF
Price, platforms and features side by side. The table says where each price was read and when.
ChatDOC
Chat with PDFs and documents, with answers traced to the source
Free trial · from $89.9/yr
ChatPDF
Ask questions about PDFs and get answers with citations
Free plan · from $89.99/yr
Where they differ
- ChatDOC starts at $89.9 per 360 days (a 30-day plan is also sold). ChatPDF starts at $89.99 per year or $14.99 per month (US App Store in-app purchase).
- ChatPDF has a free plan. ChatDOC does not, though it has a free trial.
- Only ChatDOC lists a browser extension.
- Only ChatPDF lists macOS, Windows, iOS and Android apps.
- ChatPDF also covers AI search.
In commonWebPublic APIChat assistantResearchCitations
At a glance
| ChatDOC | ChatPDF | |
|---|---|---|
| Pricing | Free trial | Free plan |
| Starts at | $89.9 per 360 days (a 30-day plan is also sold) | $89.99 per year or $14.99 per month (US App Store in-app purchase) |
| Free plan | None | 2 documents a day, usable without an account. A free account adds saved history and multi-file folders. Free files are capped at 120 pages or 10 MB. |
| Free trial | Free account, no card needed: 10 file uploads and 100 questions in total, at most 5 files and 20 questions a day. | None listed |
| Web | ||
| macOS | ||
| Windows | ||
| iOS | ||
| Android | ||
| Browser extension | ||
| Made by | ChatDOC | ChatPDF GmbH |
| Price read from | chatdoc.com | apps.apple.com |
| Checked | Oct 5, 2026 | Oct 5, 2026 |
Who each one suits
ChatDOC
- Checking each AI answer against the passage it came from
- Reading papers and reports full of tables, formulas or scanned pages
- Asking questions across a folder of documents
- Users who want to answer with their own model API key
ChatPDF
- Students and researchers who want quick answers from a paper or textbook chapter
- Asking questions across several files kept in one folder
- Trying a document chat tool without creating an account
- Turning course material into flashcards or slides
Worth knowing
ChatDOC
- The Free plan is a one-time allowance of 10 uploads and 100 questions, and it accepts PDF files only.
- The web app says it does not work on mobile and asks users to open it on a computer.
- Image analysis is a paid add-on, and GPT-4o messages are bought as separate question packages.
- Refunds must be requested within 7 days of purchase and only if Pro features have not been used.
ChatPDF
- The website shows Plus prices only in an upgrade dialog and sets them per visitor; the prices here are US App Store in-app purchases, and web checkout may differ.
- The free plan covers 2 documents a day, and the site's limits cap free use at 20 messages a day and files of 120 pages or 10 MB.
- AI Research summaries are built from abstracts, and chatting with a full paper works only for open-access papers.
- The best model is reserved for Plus; ChatPDF says it routes queries between GPT-4o and GPT-4o-mini.
Key features
ChatDOC
- Cited answers with TapSource
- Each answer carries footnotes that open the passage it came from, and figures quoted in an answer can be traced back to the table or data behind them.
- Collections
- Put files in a collection, or upload a folder, and ask questions across all of them. Free accounts can hold 30 files in a collection; Pro has no limit.
- Tables, formulas and scans
- Recognizes cross-page tables and formulas and reads scanned files with OCR. The changelog says OCR became free for all users in December 2025.
- Document translation
- Translates a whole PDF or Word file while keeping its layout. Free accounts can translate 3 pages per file; Pro is unlimited.
- Bring your own model
- Besides the built-in models, users can enter their own API key to answer with models from OpenAI, Gemini, DeepSeek, Grok and others.
- Browser extensions and API
- Chrome and Edge extensions open local files and web documents in ChatDOC. A separate API sells document parsing and question answering as prepaid packages.
ChatPDF
- Chat with documents
- Ask questions about a PDF, Word, PowerPoint, Markdown or text file with the chat and the document side by side. Clickable citations scroll to the passage an answer came from.
- Multi-file folders
- Put files in a folder to ask questions across all of them in one conversation. Folders and saved chat history need a free account.
- AI Research
- Ask a question to find academic papers and get a summary with citations, built from the papers' abstracts. Filters narrow results to recent or influential work.
- YouTube and website chat
- Paste a YouTube or website link to ask questions about it. Video answers include clickable timestamps and an interactive transcript.
- Flashcards, slides and writing
- Makes flashcards that export to Anki, Quizlet, Brainscape or CSV, and slides that export to PowerPoint. The AI Writer drafts text with citations and exports to Word or Markdown.
- Developer API
- A backend API adds PDFs by URL or file upload and answers questions about them, with optional page references. API files are limited to 2,000 pages or 32 MB.
Plans
ChatDOC
Free$0
A one-time allowance of 10 PDF uploads and 100 questions, at most 5 files and 20 questions a day, with files of up to 300 pages and 60 MB.
Pro$89.9
per 360 days; the 30-day price sits behind a toggle
300 uploads per 30 days, 300 questions a day, no page limit, 200 MB files, and Word, EPUB, Markdown, text, scanned and website sources.
ChatPDF
Free$0
2 documents and 20 messages a day, with files of up to 120 pages or 10 MB and folders of up to 5 files.
Plus$14.99
per month on the US App Store; $89.99 for the yearly plan
Unlimited questions and documents, files of up to 2,000 pages or 150 MB, 50 PDFs per folder and the higher-quality model.
Ways to pay less
ChatDOC
No public discounts listed.
ChatPDF
- Annual discount
About 50% off with the yearly plan
On the US App Store the yearly Plus plan is $89.99 against $14.99 a month. That works out to about $7.50 a month, half the monthly rate.
