200+ features. One encrypted app.
Fourteen modules that replace your entire productivity stack — notes, tasks, calendar, budget, email, habits, contacts, journal, files, data, code snippets, RSS, and more. Every feature is end-to-end encrypted.
The essentials, built right.
The productivity tools you use every day — notes, tasks, and calendar — with depth that replaces dedicated apps.
Notes
Block-based editor with rich text, code blocks, Mermaid diagrams, LaTeX, embeds, markdown, and backlinks. Import from Markdown, HTML, and Notion.
Tasks
List, Kanban, calendar, and timeline views. Recurring tasks, multi-timer, 8 statuses, priorities, bulk operations, and subtask hierarchies.
Calendar
Day, week, month, and agenda views. CalDAV bidirectional sync, video conference detection, recurring events with exceptions, and drag-and-drop.
Everything else you need.
Journal, contacts, encrypted files, data management, code snippets, RSS, and more — all included in every plan.
Budget & Finance
Double-entry bookkeeping, zero-based budgeting, envelope mode, bank reconciliation, reports, and CSV/OFX/QIF import. All encrypted.
IMAP/SMTP client with 7 provider presets, OAuth2 for Google/Microsoft, conversation threading, and HTML sanitization.
Habits
Habit tracking with streaks, goals, heatmap analytics, 4 frequency types, and 4 value types. Build better routines privately.
Journal
Time-stamped entries with 5-level mood tracking, trends, streaks, heatmaps, tags, and rich formatting. Fully encrypted.
Contacts & CRM
Contact management with companies, org charts, groups, interaction history, duplicate merge, and 80+ field mappings. vCard import/export.
Data & SQL
Structured datasets with full SQL query engine, live execution, autocomplete, dry-run mode, and cross-dataset JOINs.
Encrypted Files
A vault for sensitive documents with end-to-end encryption. Preview, organize, and sync your files securely.
Code Snippets
Save and organize code snippets with syntax highlighting for 20+ languages. Your personal code library.
RSS Reader
Follow the web privately with RSS and Atom feeds. Offline reading, categorization, and OPML import/export.
Workspaces
Isolated environments for personal, work, and side projects. Enable only the plugins you need, switch contexts instantly.
Knowledge Graph
Interactive visualization of your notes, links, and ideas. Explore connections visually and discover hidden relationships.
The foundation.
The technology that makes it all work — encryption, sync, AI, and the glue that connects every module together.
P2P Sync
Your devices find each other and sync automatically. No server, no cloud, no middleman.
Your devices talk directly to each other. No server. No cloud. No third party. mDNS on your local network, encrypted tunnels everywhere else.
Cloud Sync
Sync via Google Drive or iCloud — but encrypted end-to-end before upload. Your cloud provider sees only gibberish.
Encryption
Military-grade encryption that even we can't break. Your password never leaves your device.
ChaCha20-Poly1305 encryption. Argon2id key derivation. Your password never leaves your device. Your keys never touch our servers.
Duncan AI Assistant
AI assistant with semantic search across all your data, natural language actions, speech-to-text, and multiple AI provider support.
RAG semantic search, intent classification with action execution, chat-based interaction, multi-provider (OpenAI, Groq, Mistral, local Llama), speech-to-text, and content suggestions.
Cross-Platform
Native apps for Mac, Windows, and Linux. Android coming soon. Same encrypted sync across all of them.
Command Palette
Hit a shortcut, type what you want, get there instantly. Search documents, run commands, change settings — with full plugin integration.
Cross-Linking
Semantic linking across every plugin. Link notes to tasks, tasks to calendar events, contacts to journal entries — no configuration needed.
See it in action.
Try PrivStack free for 7 days. Your data stays yours.