A personal AI that runs 100% on your own device — email, calendar and errands with memory you can inspect
Underdog, from Conway Research, takes the opposite approach to cloud agents: everything runs on your own computer. It works across your email, calendar and notes, handles dictation and errands, and keeps an inspectable on-device memory — you can see exactly what it remembers about you.
Underdog opened an invite-only beta in October 2026 (Mac first, Windows in beta, iOS listed as coming soon). According to its official FAQ it is free, takes only a small cut on purchases its agents make, and will never show ads.
| Pricing | Free |
|---|---|
| Category | AI Personal Agents |
| Platforms | mac, windows |
| Company | Conway Research |
| Best for | Privacy-first users who want an agent that never sends their life to the cloud |
| Official website | underdog.ai |
Personal agents go further than chatbots: they keep working in the background, use tools, and complete multi-step tasks on your behalf. Choosing one starts with trust and control. Look for clear permission systems — what the agent may do on its own, what needs your approval, and how you revoke access — because an agent connected to your email, calendar and files is powerful in both directions. Channels matter: an agent you can reach by text, call or inside your chat apps fits real life better than another dashboard. Check memory and continuity (does it remember your preferences and past tasks?), the models it can use, and whether it is hosted for you or self-hosted on your own infrastructure. Start any agent on low-stakes tasks, review its work, and widen its permissions only as it earns trust.
Underdog, from Conway Research, takes the opposite approach to cloud agents: everything runs on your own computer. It works across your email, calendar and notes, handles dictation and errands, and keeps an inspectable on-device memory — you can see exactly what it remembers about you.
Underdog offers 100% on-device processing — your data stays on your machine, Inspectable memory you can read and correct, Email, calendar, notes, dictation and errands and Free, with no ads (official FAQ).
Underdog is free to use. Always confirm the current offer on its official website, as pricing can change.
Strengths of Underdog include The most private design in this category; No subscription. On the downside, Invite-only beta; iOS app not yet released.
by llama.cpp
Tiny menu-bar and system-tray app that runs open models locally via llama.cpp — chat with them, or point any OpenAI-compatible app at its local API, with one copy of each model shared across apps
Best for: People who want to run open models locally and share them across chat, coding agents and their own apps
Pricing: Open Source
by sideOS
Mac assistant that lives in the notch — hold Control + Option, say what you want, let go: it reads the screen through macOS accessibility, opens apps, clicks and types, with on-device dictation in 62 languages, on-device meeting transcription, background research tasks and reminders that can finish the job before they ring
Best for: Mac users who want a voice-driven assistant that actually operates their apps
Pricing: Paid
Limitation: Mac only — everything is built around macOS and the MacBook notch
by Gerty
Private AI assistant that runs open models entirely on an Apple silicon Mac — chat, documents, mail, calendar and voice, offline, with no account — picking the right model for the machine itself
Best for: Mac users who want a ChatGPT-style assistant without sending anything to the cloud
Pricing: Paid
Limitation: Mac only — Apple silicon (M1 or later) and macOS 26 or newer
by Bits
Open-source personal agent that runs on your own machine — an always-on daemon with crash-safe steps and memory in readable Markdown files
Best for: Technical users who want an always-on personal agent on their own hardware
Pricing: Open Source
Limitation: You install and run it yourself (Node 24+ and pnpm)
by Samsung
Samsung's rebuilt Bixby in One UI 8.5 — talk to your Galaxy naturally and it changes settings and answers with live web search
Best for: Galaxy owners who are tired of digging through settings menus
Pricing: Free
Limitation: Focused on the device itself
by Dazzle AI, Inc.
A photo-first personal assistant that learns you from your camera roll and turns photos into actions
Best for: People whose life admin starts as photos — flyers, receipts, screenshots
Pricing: Free
Limitation: Invite-based access for now
