Rubber Duck vs Granola: On-Device Meeting Notes vs Cloud AI Notepad (2026)

Quick answer: Both capture meetings without a bot joining the call. The difference is where the audio goes and what else the tool does. Granola is a polished cloud meeting-notepad: it sends your meeting audio to cloud transcription providers, stores your notes in its cloud, and expands sparse notes into AI summaries, on a $14 per user per month plan. Rubber Duck keeps meeting audio entirely on your Mac, transcribes on-device, uses your own AI for cleanup, files calls into a searchable notes library, and also handles everyday dictation. Pick Granola for a polished cloud notepad with integrations; pick Rubber Duck when meeting audio must stay private and you want dictation plus meetings in one local app.

Granola earned its fans. The "augmented notes" idea, where you jot a few sparse lines during a call and it expands them against the transcript, is genuinely one of the nicer meeting-notes experiences out there. So this comparison is not about which app is more polished today. It is about a design decision underneath both: what happens to your meeting audio.

At a glance

Same no-bot capture, opposite privacy models

Both tools do the polite thing: no bot joins the meeting, nothing appears in the participant list, and they capture your Mac's own microphone and system audio. That is where the similarity ends.

Granola's own security page is transparent about the pipeline: audio is sent to third-party cloud providers (Deepgram and AssemblyAI) to be transcribed, and cloud AI (OpenAI and Anthropic) generates the notes. To its credit, Granola deletes the audio after transcription, encrypts everything, and holds SOC 2 Type II. But the audio does leave your machine to get transcribed, and the resulting transcript and notes are stored in Granola's US cloud, by default indefinitely.

Rubber Duck transcribes the meeting on your Mac. The audio is never sent anywhere, and the note is a Markdown file on your own disk. For a privileged, confidential, or regulated conversation, that is the difference between "allowed" and "not allowed."

A note on data training

One detail worth knowing: on Granola's Free and Business plans, your data is used to train and improve models on an anonymized basis by default, with an opt-out in settings, and org-wide enforcement only on Enterprise. Rubber Duck does none of this, because your notes and audio are on your machine, not in a service that could learn from them.

AI: their pipeline versus your subscription

Granola's notes are generated by its own cloud pipeline over OpenAI and Anthropic; you use it as-is, as part of the subscription. Rubber Duck's cleanup runs through the Claude Code or Codex subscription you already pay for, so there is no second AI bill and you control where the text goes. The honest tradeoff: Granola's augmented-notes flow is more turnkey, and Rubber Duck asks you to bring an AI subscription for cleanup.

More than meetings

Granola is meetings-only by design; that focus is part of why it feels so clean. Rubber Duck covers meetings and everyday capture, the quick idea, the voice memo, the talk-to-think ramble, filing all of it into one searchable library. If you want a single Mac app for both "take notes on this call" and "let me talk through this problem," that breadth matters.

What Granola does better

• - The augmented-notes experience: jot sparse notes, and it expands them beautifully.
• - Integrations: Notion, Slack, HubSpot, and more, plus AI chat across your whole meeting history.
• - A Windows app and a mature, polished product.

If you live in a cloud stack, want deep integrations, and are comfortable with cloud processing, Granola is a lovely tool.

What Rubber Duck does better

• - Meeting audio never leaves your Mac; on-device transcription, local notes.
• - No default data training and no notes sitting in someone else's cloud.
• - Bring your own AI, no per-seat subscription; Pro is $6 or $99 lifetime.
• - Dictation plus meetings in one app, not meetings alone.

Which should you pick?

Choose Granola if you want a polished, integrated cloud meeting-notepad and cloud processing is fine for your conversations.

Choose Rubber Duck if meeting audio must stay on your machine, you would rather use your own AI subscription than a per-seat plan, and you want everyday dictation and meetings living in one private, searchable notes library.