Sentient OS
Sentient OS provides an on-device AI assistant for Mac that learns from a user's emails, messages, calendar, notes, and files overnight to build a personal knowledge base. It offers proactive suggestions for follow-ups, renewals, and expenses, plus a Double Tap feature that drafts context-aware replies in the user's own voice. The system supports multiple AI backends, including ChatGPT, Claude, OpenRouter, and local models, with privacy controls that keep data on-device.
- AI Agents
- Artificial Intelligence
- Software Only
Funding
Raised to date
$500KRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Founder details are not available yet.
Product
Problem
Knowledge workers spend significant time on routine communication tasks—drafting replies, following up on stalled conversations, filing expenses, and canceling unused subscriptions. These tasks require digging through scattered personal data across email, messages, notes, and files, leaving users with less time for higher-value work.
Solution
Sentient OS is an on-device AI assistant for Mac that learns from a user's personal data—including emails, messages, calendar, notes, files, and screenshots—to build a comprehensive knowledge base overnight. The AI analyzes these selected local sources on the Mac and prepares proactive suggestions for the day ahead, such as drafting follow-up emails, flagging upcoming renewals, and filing expense reports. Users can approve suggestions with a tap or use the Double Tap feature to generate an informed draft reply in their own voice based on the current conversation context. The system works across everyday apps like Gmail, Apple Mail, iMessage, and WhatsApp, and respects user control by keeping drafts unsent until reviewed. Sentient OS supports multiple AI backends, including ChatGPT, Claude, OpenRouter, and compatible local models, so users can choose the provider that fits their privacy and capability preferences.
Target Audience
Primary customers are Mac-based knowledge workers, professionals, and small business owners who handle high volumes of email and communication and want an AI assistant that works with their personal data while keeping it private on-device.
Features
- On-device analysis of emails, messages, calendar, notes, files, and screenshots to build a personal knowledge base stored locally on the Mac as Markdown files
- Double Tap feature that drafts context-aware replies in the user's writing style based on a one-time snapshot of sent messages, editable anytime in `writingstyle.md`
- Proactive intelligence that identifies loose ends—such as quiet proposals, pending customer updates, trial renewals, and expense deadlines—and offers to handle them
- Computer-use capability that can execute multi-step tasks in apps on the user's behalf with explicit approval
- Choice of AI backend: ChatGPT, Claude, OpenRouter API, or compatible local models via Ollama or LM Studio, with Apple Mail and Calendar analysis working without a cloud subscription
- Optional encrypted cloud sharing of the knowledge base over MCP for compatible AIs, with AES-256-GCM encryption, zero-access relay, and a private link controlled by the user
- Zero Data Retention route for Double Tap through a Cloudflare-hosted relay to cover latency and privacy needs for first users