Show HN: PrimeTask, an offline-first work OS with BYO AI through MCP

PrimeTask, an offline-first work operating system, launches with a Bring Your Own AI feature via the Model Context Protocol (MCP), allowing users to integrate their own AI models. The platform combines tasks, projects, CRM, calendar, and a visual canvas into a single locally-run system, emphasizing ownership over subscription-based software.

Software you own. Not software you rent. The productivity system that's yours forever. Tasks, projects, CRM, calendar, focus, and a visual canvas. One connected system, on your machine. Project management Start with a project. Open a new project and give the work a shape from day one. Goals, milestones, notes, tasks, and health all live together, so the project is more than a folder. PrimeTask helps you see what matters: what you are trying to achieve, what is already moving, what is slipping, and what needs attention next. Included in Standard. Explore project management /features/project-management Task management Add tasks the way you actually think. Type what needs to happen in plain language. PrimeTask can understand dates, projects, priorities, tags, assignees, contacts, companies, statuses, and durations as you write. No structured form. No modal maze. Just capture the task while the thought is still fresh, then let PrimeTask turn it into something organised. Included in Standard. Explore task management /features/tasks What's inside Everything you need. Nothing you don't. Task Management Quick Add, List, Board, Calendar, and Gantt views. Capture work fast, then manage it from the view that fits the moment. Learn more Project Management Goals, milestones, notes, health tracking, and progress context. Give every project a clear shape from day one. Learn more Calendar & Day Planner Day, Week, Month, Agenda, and Day Planner views. Apple Calendar and Reminders sync keep capture close at hand. Learn more Focus Mode Pomodoro and custom timers, pop-out task windows, break tracking, and focus session statistics. Learn more PrimeFlow A visual canvas on live project data. Mind maps, task nodes, CRM nodes, media embeds, and FlowMode presentations. Learn more Automations Trigger-condition-action rules, built-in presets, and custom workflows that run locally without monthly automation caps. Learn more Integrations Bring Your Own AI via MCP, Obsidian plugin, Apple Calendar & Reminders sync, imports, exports, and deep links. Learn more Pro /features/crm PrimeCRM Contacts, companies, deal pipeline, outreach tracking, sales dashboards, and relationship workspaces connected to projects. Learn more Pro /features/custom-fields Custom Fields Field types, rollups, financial summaries, and structured project data for teams that need more than progress bars. Learn morePrimeCRM Pro Every contact is a workspace. A contact in PrimeTask is not a row in a database. It is a workspace: projects this person touches, every activity logged, deals in flight, files attached, and tasks tied to the relationship. Personal contacts and business contacts can live in the same system, while Spaces and project-level CRM modes keep context separated when you need boundaries. Available on Pro. Explore PrimeCRM /features/crm Custom Fields Pro Most project dashboards stop at progress bars. PrimeTask lets projects carry the numbers that actually matter: budget, burn rate, runway, billing status, risk, owner, priority, and any custom field your work needs. Rollups turn those fields into live project context, so you are not just tracking whether tasks are done. You can see whether the project is healthy, affordable, and still worth the plan. Available on Pro. Explore custom fields /features/custom-fields PrimeFlow Now see everything connected. Projects, tasks, contacts, and custom fields are not separate stacks in PrimeTask. They live on the same canvas, and every link between them is bidirectional. PrimeFlow is the visual layer where all of it comes together. Build a deal pipeline, sketch a project plan, map a system, or just lay out today's work. Drop in any task, contact, project, or note. They keep their data, and they update wherever else they appear. Included in Standard. Advanced nodes and FlowMode are available on Pro. Explore PrimeFlow /features/primeflow Apple ecosystem Capture tasks from anywhere. PrimeTask syncs bidirectionally with Apple Reminders. Add tasks from your iPhone, iPad, Apple Watch, or Siri. They flow straight into your projects. iPhone & iPad Add tasks in Reminders on any Apple device. They appear in PrimeTask on your Mac automatically. Siri "Hey Siri, remind me to review the proposal." Done. It appears in PrimeTask. Apple Watch Raise your wrist, speak, done. Tasks captured in seconds without reaching for your phone. Works offline Reminders works without internet on all devices. PrimeTask syncs when both are online. Bidirectional Changes flow both ways. Complete a task in PrimeTask and it's done in Reminders too. One list, one Space Pick a Reminders list to sync. Synced tasks land in the PrimeTask Space you choose. Built with native Swift using EventKit. Not a workaround. A first-class integration. PrimeTask Mobile is in development. First of its kind We checked. Nothing else does this. No product on the market combines tasks, projects, CRM, calendar, canvas, focus, and automations into one offline-first desktop app you own. PrimeTask is the first. We looked. The category didn't exist before we built it. Built for For people who take their work seriously. Freelancers & consultants Manage multiple clients with CRM context tied to projects. Stop paying for three separate subscriptions. Small business owners Run operations, sales, and delivery from one desk. Everything in one place without enterprise complexity. Agencies Project isolation with confidential client separation. Parallel campaigns without data leaking between them. Developers & designers Keyboard-driven workflows, attention to detail, software that doesn’t get in the way. Creators & makers Manage projects, clients, deadlines, and assets in one place. Game devs, audio producers, content creators, indie publishers. Individuals & personal use Plan your life, not just your work. Day planning, focus sessions, personal projects, trip planning, all in one private space. More than software Direct chat with the people building PrimeTask. Every customer gets a private channel to the dev team. Not a support queue. Not a contact form. A real conversation with the people shipping the product. Report bugs and watch them get fixed. Vote on features and shape the roadmap. Track what is being worked on, what is shipping next, and what just landed. Manage your license and download builds, all in one place. Pro customers get Beta Channel Access early builds before stable release and priority support. Privacy by design Software you use every day should belong to you. Your data lives on your device. No servers hold it, no telemetry phones home, no account is required to use any feature. Lock the app behind a PIN when you step away. Export to open JSON or CSV anytime. Take your data with you, forever. Privacy by architecture, not by policy. Trusted by early adopters What people are saying. Simple pricing One purchase. Yours forever. Standard A fully functional productivity system. No soft limits, no caps. - Unlimited tasks, projects, and spaces - Quick Add with natural language e.g. "Call dentist tomorrow 3pm" - List, Board, Calendar, and Day Planner views - Bring Your Own AI MCP server, core task tools - PrimeFlow visual canvas core nodes & mind maps - Focus Mode Pomodoro, timers, session tracking - Apple Calendar & Reminders sync capture from any Apple device - 6 built-in automations - Goals & Milestones OKR-style key results - Project Health tracking progress, recommendations - PIN lock, AES-256 encryption, backup & restore - Import/export, personal sync iCloud or your own sync folder - External Integrations & Deep Links - Customer Portal access - Free updates included 190+ features Everything you need to manage tasks, projects, and goals. No limits, no caps. Buy Now /checkout?tier=standard Pro Everything in Standard, plus the advanced toolkit. - Unlimited Contacts, Companies & Deals - PrimeCRM deal pipeline, sales dashboards, activity tracking - Company Linking competitor, partner, supplier, subsidiary & more - LinkedIn Outreach, Sequences & Message Templates - Call, Email & Meeting Trackers - CRM Import & Export CSV, vCard, JSON - Custom Fields 14 types, cross-entity connections, rollups - Full MCP toolset for your AI 100+ tools, incl. CRM & Custom Fields - Custom Statuses & Custom Priorities - Gantt View dependencies, zoom, drag-resize - Custom Kanban Boards - PrimeFlow advanced nodes, Portals & FlowMode and more - Custom Automations unlimited rules - Project Metrics snapshots, velocity, charts, export - Collaboration & Shared Spaces team sync, assignments, notifications - CRM & Sales Reports activity tracking, sales funnel - Beta Channel Access early builds & new features - Priority support 280+ features Buy Now /checkout?tier=pro Ready to own your productivity? Start with a 14-day free trial. Full Pro access. No credit card required. Install once, own forever. Start Free Trial /download Your tools should outlive the companies that made them. Common questions Frequently asked questions PrimeTask Mobile is in development. In the meantime, PrimeTask syncs bidirectionally with Apple Reminders, so you can capture tasks from your iPhone, iPad, Apple Watch, or Siri and they appear in PrimeTask automatically. It's not a workaround. It's a native Swift integration built into the app. PrimeTask believes AI should assist your workflow, not do your work for you. Rather than building its own chatbot, it connects to the AI you already use, whether that's Claude, Cursor, or a local model like LM Studio, through an open standard called MCP. Your AI then works directly with your tasks, projects, and CRM through 100+ local tools. You pick the brain, PrimeTask supplies the hands. Everything runs on your machine, so your data never leaves your device. That's AI done right. Your data is stored locally in open JSON format, readable by any text editor and exportable to CSV. PrimeTask runs entirely on your machine with no server dependency. Even if we disappeared tomorrow, your data and the app itself would continue to work exactly as before. PrimeTask's privacy is architectural, not a policy. Your data stays on your device by default. It only leaves when you explicitly enable a sync method such as iCloud or your own sync folder. There's no telemetry, no tracking, no analytics. We literally cannot see your data, because it doesn't exist anywhere we can reach. Yes. Your one-time purchase includes all future updates within your major version. We ship updates regularly new features, performance improvements, and bug fixes , all included at no extra cost. Every PrimeTask user gets access to a personal Customer Portal at primetask.app. From your portal you can download the latest release, view your license and activation details, submit bug reports with attachments, read announcements, join the community wall, access the public roadmap, and manage billing. Eligible users may also be invited to the affiliate program. It's your hub for everything PrimeTask. No account on a third-party platform required. Newsletter Stay in the loop Get product updates, productivity tips, and early access to new features. No spam, unsubscribe anytime. Your tools should outlive the companies that made them.