Capacities (capacities.io) is an innovative personal knowledge management app built around the concept of object types — rather than storing everything as generic notes, Capacities lets users define distinct content types like Books, People, Projects, Meetings, and Ideas, each with their own structured properties and templates. This object-based approach brings database-level structure to note-taking without the complexity of building databases manually. Connected by bidirectional links and a Daily Notes journal, Capacities creates a knowledge base that understands the nature of what you are capturing, not just the text. With a clean, fast interface and growing AI features, Capacities appeals to knowledge workers who want more structure than basic notes apps but more approachability than Roam or Notion.
How Capacities Works
Create a Capacities space and begin capturing through the Daily Notes journal or by creating structured objects. Define content types that match your workflow — create a "Book" object with properties for Author, Rating, Genre, and Status; create a "Person" object linking to every meeting and note where that person is mentioned. When you capture a book you are reading, Capacities presents the structured template for that object type automatically. Link any object to any other using bidirectional connections. Write free-form notes within each object, embed media, and attach files. Use the AI assistant to summarize notes, generate content, and ask questions across your knowledge base. Capacities syncs across devices and provides a visual graph of all connected objects and notes.
Key Features
- Object-based structure — define custom content types like Books, People, Projects, and Meetings
- Structured properties — add typed fields to each object type for rating, status, date, and more
- Daily notes journal — automatic dated capture workspace connecting to all created objects
- Bidirectional linking — connect any object or note to any other with mutual backlinks
- AI assistant — summarize, generate, and query content across the knowledge base
- Visual graph — interactive map of all objects and connections in your Capacities space
- Rich text editor — write free-form content within any object with full formatting support
- File and media attachments — attach images, PDFs, and files directly to any object or note
- Cross-device sync — access the knowledge base on Mac, Windows, iOS, and web
- Templates — built-in and custom templates for recurring object creation workflows
Capacities Pricing
| Plan | Monthly | Annually | Key Inclusions |
|---|---|---|---|
| Free | $0 | $0 | Core object types, daily notes, bidirectional links, limited storage, personal use |
| Supporter | $11.99/mo | $9.99/mo | Unlimited objects and storage, AI assistant, custom object types, file attachments, priority sync, early feature access |
| Pro | $14.99/mo | $12.49/mo | All Supporter features, advanced AI capabilities, expanded storage, priority support |
Always check the latest rates on the official website. For more AI tool reviews, visit aitoolscoop.com.
Who Should Use Capacities?
Capacities is the right tool for knowledge workers who find generic notes apps too unstructured but find Notion too database-heavy for personal use, book readers and lifelong learners who want to connect reading notes to authors, themes, and ideas systematically, professionals managing a CRM-like network of contacts, projects, and meetings in their personal knowledge base, researchers building structured literature reviews and annotated reference libraries, and productivity enthusiasts exploring object-based thinking as an alternative to traditional note-taking. The free plan provides enough functionality to evaluate the object-based approach, and the Supporter plan suits most power users with its unlimited content and AI access.
