Free (beta) Mac app, invite-only
Free source (opens in a new tab)
Free
For: Privacy-focused Mac users
Limits
- Invite-only beta
Includes
- On-device AI under 4GB
- Email, calendar, meeting notes, dictation, browser errands
No API
Productivity & writingDocumented overviewLast checked Oct 1, 2026
Underdog: Pricing, Features & Best Use Cases
Local, private AI assistant for Mac that handles email, calendar, meeting notes, dictation and browser errands on-device.
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Our take: Choose Underdog if you use a Mac with Apple silicon and want email, calendar, meeting notes and dictation handled by a model that runs on your own computer, and you can get an invite to the beta.
Main limitation: Access is by invite-only beta, and the product is a Mac app (an iPhone and iPad app is mentioned only in the privacy policy), with expense tracking and tax features still marked coming soon.
Who should use Underdog
Choose Underdog if you use a Mac with Apple silicon and want email, calendar, meeting notes and dictation handled by a model that runs on your own computer, and you can get an invite to the beta. Based on the vendor's documentation, not on a hands-on test.
Best for: Privacy-focused Mac users
Also a good fit for
- Professionals handling email and meetings
- Users wanting local AI
Consider another tool if invite-only beta
Or if
- Requires a Mac with Apple silicon
- Windows, Linux, iOS and Android not yet available
Underdog in the news
Headlines from US outlets, selected automatically — not endorsements. Updated Oct 2, 2026
Underdog pricing and usage limits
Prices checked Oct 1, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.
Vendor pricing page re-checked automatically 12 days ago: no changes detected.
Free access and trial conditions
The pricing page says Underdog is 100% free and 'free forever' because it runs on your computer; access currently requires an invite code.
None; it is free.
Paid plans: what changes as you upgrade
Usage caps, credits and extra costs
None stated. The $1,999/month 'Good Boy' plan shown on the pricing page is a joke and not a real price.
Not applicable.
What is Underdog, and how does it work?
Underdog is a small AI model and app that runs locally on a Mac with Apple silicon, using under 4GB. It connects to Gmail, Outlook and Google/Outlook calendars, takes meeting notes, and offers dictation in any app, all processed on-device. It can also operate your browser for errands like booking or cancelling subscriptions, requiring approval before purchases. It is in invite-only beta and states it is free.
What you provide and what you get back
You provide
- Your Gmail or Outlook mailbox and Google or Outlook calendar
- Meeting audio captured on your computer
- Your voice for dictation
- Natural-language errands for the browser
You get back
- Email drafts and triage
- Meeting transcripts and summarized notes
- Dictated text in any app
- Calendar events prepared for your approval
Where you can use it
- Platforms
- Desktop
- Account
- Required
- Platform
- Mac with Apple silicon; iPhone/iPad app mentioned in policy
- Model size
- Under 4GB, runs locally
- Gmail, Outlook
- Calendar
- Google Calendar, Outlook Calendar
- Dictation
- Hold fn, any app, on-device
- Coming soon
- Expense tracking, tax preparation
Where Underdog is most useful
Scenarios are worked out by our editors from the documentation; the actual result depends on your input and plan.
Private email triage and drafting
- Who
- Professionals with heavy inboxes who dislike cloud AI
- You provide
- A connected Gmail or Outlook account
- Expected result
- Drafts and summaries produced by an on-device model, in a keyboard-driven mail client (Cmd-K commands)
- Plan needed
- Free beta
- Limitation
- Mail still syncs directly with your provider source (opens in a new tab)
Local meeting transcription and notes
- Who
- People attending frequent calls
- You provide
- Live meeting audio on the Mac
- Expected result
- A transcript and summarized notes generated on-device, without audio leaving the machine
- Plan needed
- Free beta
- Limitation
- Quality of a small sub-4GB model is not benchmarked on the pages source (opens in a new tab)
Voice dictation across apps
- Who
- Users running personal errands
- You provide
- A task such as finding a nonstop flight or cancelling a forgotten subscription
- Expected result
- The assistant drives your browser and stops for your approval before booking, buying or cancelling
- Plan needed
- Free beta
- Limitation
- You must approve purchases and can take over at any time source (opens in a new tab)
Key features and their practical limits
On-device AI model under 4GB
A small language model of under 4GB runs locally for chat, summaries, drafts and notes instead of calling a cloud AI service. Content is not sent to an AI provider for processing.
Gmail and Outlook email client
Connects directly to Gmail and Outlook with credentials stored on your computer, and strips remote images, scripts and tracking pixels from mail. Private email handling with no intermediate server reading your mail.
Google and Outlook calendar integration
Transcribes meetings and dictation with a local speech model; hold fn to dictate into any app. Notes and dictated text without streaming audio to a data center.
On-device meeting notes and dictation
Finds free time, flags conflicts and prepares events for your approval using Google Calendar and Outlook Calendar. Scheduling without opening a calendar app.
Underdog: strengths and limits
Reasons to choose Underdog
- Stated free with no cloud processing You are not charged and there is no subscription to manage. documented source (opens in a new tab)
- Data stays on the user's computer Mail, notes and recordings are not uploaded for AI processing, reducing exposure of sensitive content. documented source (opens in a new tab)
- Approval step before booking, buying or cancelling Mistakes such as a wrong purchase are prevented because you confirm first. documented source (opens in a new tab)
- Works with Gmail and Outlook You can use your existing mailboxes without migrating. documented source (opens in a new tab)
Check before paying for Underdog
- Invite-only beta You must request an invite and may wait. documented source (opens in a new tab)
- Requires a Mac with Apple silicon Intel Macs and other operating systems are excluded; Windows, Linux and Android are not available. documented source (opens in a new tab)
- Windows, Linux, iOS and Android not yet available Windows, Linux, iOS and Android users cannot use it, apart from the iPhone/iPad app named in the policy. documented source (opens in a new tab)
- No API offered You cannot automate it from code or other tools. documented source (opens in a new tab)
How to use Underdog for running email, calendar and meeting notes with a local AI
Set up Underdog
- Go to underdog.ai/docs and enter your email on the invite page ('Knock') to request access.
- Install the Mac app once your invite code arrives (Apple silicon Mac required).
- Connect your Gmail or Outlook account and your Google or Outlook calendar; you sign in on Google's or Microsoft's own page.
- Grant microphone permission for meeting notes and dictation, and review Settings for usage sharing.
Example: running email, calendar and meeting notes with a local AI
- Open the mail view and press Cmd-K to run an Underdog command on a message.
- Start a meeting note so it listens on your computer and generates notes when you pause.
- Hold fn in any app to dictate a reply.
- Ask the chat to prepare a calendar event and approve it.
Review and export the result
- Verify drafts and notes against the original message or recording.
- Open Settings to see, edit or delete saved memories.
- Confirm the app shows 'Local' and no cloud AI service for your content.
Find a nonstop flight from SFO to New York on Sep 18 and stop before buying.
Underdog API
API access and separate billing
Underdog has no public API in its official documentation. No API offered; /docs is the invite page
Privacy, data use and commercial rights
Summarized from the vendor's current policies; this is not legal advice and a vendor's badge is not an independent audit.
How your inputs and outputs are handled
Mail, calendar, recordings, transcripts and chats are processed by on-device models; no third-party AI provider is used.
Page states your information cannot be used to train AI models, and the policy says no content is uploaded for processing.
Account info is kept while you have an account; optional daily usage counts are deleted with it; server records are kept for a limited period.
Controls for business users
- Optional usage sharing can be switched off
- Crash reports only sent after you review them
- Delete account from account page
Policies: underdog.ai/privacy
Underdog alternatives by need
"Better suited" is based on documented features and pricing, not on a head-to-head test.
Microsoft Copilot: better suited to
Otter.ai: better suited to
ChatGPT: better suited to
Claude: better suited to
| Alternative | When to choose it | Pricing | Limitation | |
|---|---|---|---|---|
| Microsoft Copilot | — | — | ||
| Otter.ai | — | — | ||
| ChatGPT | — | — | ||
| Claude | — | — |
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Underdog FAQ
Is Underdog really free?
Yes per its pricing page: '100% free' and free forever because it runs on your computer. The $1,999/month 'Good Boy' plan on that page is a joke. source (opens in a new tab)
How can I get access to Underdog?
It is an invite-only beta; you enter your email on the invite page at underdog.ai/docs and a code is sent to you. source (opens in a new tab)
Does Underdog send my email to a cloud AI service?
No. The policy says it uses no third-party AI provider and that summaries, drafts and answers come from a model running on your computer. source (opens in a new tab)
What does Underdog need to run?
A Mac with Apple silicon; the model takes under 4GB. Windows, Linux and Android are not offered. source (opens in a new tab)
Will Underdog buy things without asking?
No. For browser errands it asks for your approval before it books, buys or cancels, and you can take over at any time. source (opens in a new tab)
Sources and review methodology
Official sources and verification dates
- Pricing - Underdog pricing · checked Oct 1, 2026 · pricing
- Underdog. The Most Loyal AI. homepage · checked Oct 1, 2026
- Privacy Policy - Underdog policy · checked Oct 1, 2026 · data collected, third-party AI
- Who goes there? - Underdog help · checked Oct 1, 2026 · invite
Not verified: Whether iPhone and iPad app is publicly available; Languages supported; Minimum macOS version; Data-broker removal feature availability (shown as concept preview).
How we documented and maintain this page
Every fact about Underdog above comes from the 4 official pages listed here, last compared on Oct 1, 2026; we have not run Underdog ourselves, so it has no editorial score. How we check and re-check pages.
Article updated Oct 10, 2026; prices checked Oct 1, 2026. Outbound links to vendors are plain links; we do not earn commissions. How we review · Report an error