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Capacities
A note-taking and personal knowledge management app that connects ideas as linked objects with AI assistance and offline access.
$11.99/mStarting price
321KMonthly visits
42Popularity
About Capacities
Capacities is a personal knowledge management and note-taking application designed for individuals who prefer organizing ideas as connected objects rather than traditional files in folders. The app allows users to create custom object types—such as people, books, or projects—each with properties, templates, tags, and specialized layouts like profiles or encyclopedias. Users can link any object to another, view automatic backlinks, and uncover unlinked mentions to reveal hidden connections across their notes. The AI-assisted features, available in the Pro tier, include an AI chat assistant, commands for summarizing or translating content, and property auto-fill to streamline note structuring. Advanced users can leverage smart queries, calendar integration for creating objects from events, task automation that sends tasks to external managers, table formulas, and a public API in beta. Capacities supports offline mode, graph views for visualizing relationships, and full export to standard formats. It integrates with tools like Readwise, Kindle, Raycast, Web Highlights, and Zapier, and is accessible via web, desktop, iOS, and Android platforms.
Key features
- Object-based notes with custom types and properties
- Automatic backlinking and unlinked mention discovery
- AI chat assistant and commands (summarize, translate, auto-fill)
- Smart queries, calendar integration, and task automation
- Table formulas and public API (beta)
- Offline mode and graph views for relationships
- Full export to standard formats
- Integrations with Readwise, Kindle, Raycast, Web Highlights, and Zapier
- Multi-platform access (Web, Desktop, iOS, Android)
- Freemium pricing with Pro tier for advanced features
Use cases
- Research and knowledge organization for students or academics
- Meeting summaries and structured note-taking for professionals
- Personal knowledge management with visual relationship mapping
Pros
- Turns ideas into connected objects instead of files in folders
- Automatically surfaces hidden connections between notes via backlinks and related content
- Supports offline mode and full export to standard formats
- Offers AI-assisted features in Pro tier for summarizing, translating, and auto-filling properties
- Provides graph views for visualizing relationships and smart queries for advanced filtering
Cons
- AI features are limited to the Pro tier
- Smart queries and public API are in beta, indicating potential instability
- Requires learning a new object-based paradigm instead of traditional file systems
- Advanced automation and integrations may have a learning curve for new users
Frequently asked questions about Capacities
What is Capacities and what does it do?
Capacities is a personal knowledge management tool that transforms ideas into connected objects—such as people, books, projects, or notes—instead of files in folders. It allows users to link any object to another, view automatic backlinks, and uncover unlinked mentions to reveal hidden connections across their notes.
Who is Capacities designed for?
Capacities is designed for knowledge workers, researchers, writers, and individuals who need to organize and connect their ideas, research, and projects. It suits users who prefer thinking in terms of objects and relationships rather than traditional file structures.
How does the pricing model work for Capacities?
Capacities offers a free tier with basic features and a Pro tier that includes AI-assisted features such as an AI chat assistant, commands for summarizing or translating content, property auto-fill, smart queries, and calendar integration. The Pro tier also provides advanced capabilities like task automation and a public API.
What integrations does Capacities support?
Capacities integrates with tools like Readwise, Kindle, Raycast, Web Highlights, and Zapier. These integrations allow users to import highlights, bookmarks, and other data directly into Capacities as objects, streamlining their workflow.
Can Capacities be used offline?
Yes, Capacities supports offline mode, allowing users to access and work on their notes and objects without an internet connection. Changes made offline are synchronized when the connection is restored.
How do I get started with Capacities?
To get started with Capacities, users can sign up for a free account on the website and begin creating objects such as people, books, or projects. The app provides guides and tutorials to help users learn how to capture, link, and organize their ideas effectively.
Capacities traffic & engagement
capacities.io · third-party estimates from Similarweb
Data as of Sep 2026Full AI website ranking →
Monthly visits · Sep 2026321K-20% MoM12-month high 460K (Jul 2026)
Rank among AI websites#1,007▼ 118 vs last monthof 8,652 tools on aitoolnavio™
Top marketUnited States26.7%Top 5 countries bring 56% of visits
Average visit3m 49sLonger than 88% of AI sites
Pages per visit3.29More than 81% of AI sites
Bounce rate43%Leave after one page · lower is better
Similarweb global rank#138,527#93,496 in United States
Traffic trend
Last 4 months · grows by one month every month
- Jun 2026403K
- Jul 2026460K+14.2%
- Aug 2026402K−12.7%
- Sep 2026321K−20%
Top countries
Share of visits · estimated visits
Other countries: 43.9%
Visits sent by AI assistants
How people reach this site from other AI tools
4.2K a month · 1.3% of all visits
Compared with similar tools
Productivity & Office · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.
