Plum vs Adobe Acrobat
Updated · We make Plum, and have tried to be fair.
Acrobat is the complete PDF toolkit with AI added. Plum is a reader built around an assistant that answers on the page. They solve different problems.
| Plum | Adobe Acrobat | |
|---|---|---|
| Platforms | Mac | Mac, Windows, web, iOS, Android |
| Edit, fill, and sign PDFs | No | Yes |
| AI answers with citations | Yes, highlighted on the page | Yes, linked to the source |
| Use your own AI provider | Yes | No |
| Connect external agents (MCP) | Yes | No |
| Where documents are processed | On your Mac | Adobe’s service |
| Pricing | Subscription with a 7-day free trial | Subscription; AI included or an add-on, by plan |
Where Adobe Acrobat is better
- Editing, forms, signing, OCR, and conversion. Plum does none of these.
- Runs on Windows, the web, and mobile as well as Mac.
- An established product with enterprise support and admin controls.
Where Plum is better
- The assistant works inside the reader: it turns to the page and highlights the exact lines it used, and only text it actually found.
- A native, keyboard-first Mac reader built for long papers, with citation previews and equations that copy as LaTeX.
- Bring your own key for any OpenAI-compatible provider, or connect Claude Code or Claude Desktop over MCP.
- Your PDFs are processed on your Mac; only the passages the assistant reads go to the AI.
Which should you choose?
Choose Acrobat if you edit, sign, or fill PDFs, work across Windows and mobile, or your organization already standardizes on Adobe.
Choose Plum if you mostly read papers on a Mac and want answers you can check on the page, with the AI of your choice.
Weighing other tools too? See the best AI PDF readers.
Questions
Can I use Plum and Acrobat together?
Yes. Plum opens the same PDF files, so you can read and ask questions in Plum and switch to Acrobat when you need to edit or sign.
Does Plum edit PDFs?
No. Plum is a reader. For editing, forms, and signing, Acrobat is the better tool.