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On-device AI

An AI assistant with no cloud behind it

Summaries, translation and questions run on your device's own AI. There are no credits to run out of, and nothing about your document is sent to us or to anyone else.

Flourish PDF on iPhone: a PDF open with the AI sparkle button in the top bar and Draw, Add Text, Sign and Read Aloud below

Real capture from the App Store listing.

What you can do

On-device AI, tool by tool

The plan that unlocks each tool is on its label; the chips show which platforms have it today.

Summarize a documentPro

A short summary generated on your device.

Needs Apple Intelligence (macOS 26 or iOS 26), an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory (one-time model download: 2.5 GB, or 4.8 GB on PCs with 16 GB).

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Translate text or a documentPro

Returns text; a translated PDF is on the way. Needs Apple Intelligence (macOS 26 or iOS 26), an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory (one-time model download: 2.5 GB, or 4.8 GB on PCs with 16 GB).

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Ask a question about a documentPro

A conversation with page citations. Needs Apple Intelligence, an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory.

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Rewrite, proofread and define textPro

Needs Apple Intelligence (macOS 26 or iOS 26), an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory (one-time model download: 2.5 GB, or 4.8 GB on PCs with 16 GB).

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Chat across several documentsPro

Needs Apple Intelligence, an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory.

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Edit a PDF by askingPro

Needs Apple Intelligence, an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory.

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Generate bookmarks and an outline automaticallyPro

Needs Apple Intelligence (macOS 26 or iOS 26), an Android phone with Gemini Nano, or a Windows PC with 8 GB of memory (one-time model download: 2.5 GB, or 4.8 GB on PCs with 16 GB).

  • Mac
  • iPhone & iPad
  • Windows
  • Android

Why Flourish

Private by architecture, not by promise

Most PDF apps quietly send your file to a server to run OCR, conversion, or AI. Flourish PDF has no document upload endpoint at all — which makes it a genuine fit for legal, medical, financial and other sensitive documents.

No upload endpoint

The service has no route that accepts a document. Your file cannot be sent to us because there is nowhere to send it.

OCR and scanning on the device

Apple Vision, Google ML Kit and Windows' own recognizer read the page on your hardware.

AI on the device

Summaries and questions run on Apple Intelligence, Google's on-device models or a Microsoft Phi model on your PC — no credits, no cloud fallback.

Only an account and a plan on our side

Your email, a user id, and which plan is active. Never a PDF, its text, or what you asked about it.

Try on-device ai free

Download Flourish PDF. Every tool is visible from the first launch; a paid plan unlocks the premium ones.