Can AI replace Capacities?
The core loop is small enough for a capable coding agent to produce a useful local version in one sitting. For Capacities, organize linked notes as typed objects such as people, books, meetings, and ideas. The hard boundary is object-model polish, mobile capture, sync, calendar integration, and ai features, plus sync, collaboration, and capture polish.
Replacing a paid app means you set it up and keep it running: hosting, updates and backups can be on you. What you give up.
01What it costs
Checked Aug 13, 2026 · source: capacities.io.
| Plan | Monthly | Billed yearly | What you get |
|---|---|---|---|
| Capacities Basic | Free | Free | Unlimited spaces, objects, blocks, custom object types and devices; 5 GB media total, then 100 MB uploads/month; 100 MB/file |
| Capacities Pro | $11.99 | $9.99/mo | Unlimited media uploads under fair use; 100 MB/file; AI, smart queries, calendar, tasks, formulas and API |
| Capacities Believer | $14.99 | $12.49/mo | All Pro limits/features plus beta access to major new features |
Hidden costs: Paid 'unlimited' media is subject to fair use and a 100 MB/file cap. Paddle applies regional pricing/VAT, and VPN-based regional pricing is not accepted. No team or organization plan is sold.
02Could AI build it for you?
The core job: Capture linked notes as typed objects such as people, books, meetings, and ideas, search them instantly, surface backlinks, and export a normal Markdown folder.
What a working version needs:
- macOS, Windows, or Linux
- local folder access
- optional sync folder chosen by the user
Editorial comparison targets the Pro plan and a personal local knowledge base DIY substitute. Recheck price before merge.
03What you'd give up
- object-model polish, mobile capture, sync, calendar integration, and AI features
- frictionless mobile capture
- real-time team editing
- hosted publishing
- proprietary AI memory
People still pay for Capacities because people keep paying when the note system is trusted across every device and disappears into their daily capture habits. The recurring cost buys file watching, conflict handling, indexing, mobile apps, encryption, backups, and migrations, not just the visible interface.
04Free and cheaper alternatives
Capacities with the same object obsession, local data and only 100 MB of free relay storage.
Versus paying: Anytype's typed-object graph is rougher to navigate and gives up Capacities' polished calendar integrations, object workflows, and built-in AI experience.
anytype.io →Typed blocks, relations and database views for people who enjoy seeing the machinery.
Versus paying: SiYuan exposes blocks, attributes, and database mechanics more directly, so creating and browsing coherent object types is less elegant than in Capacities.
b3log.org →Notes become objects through attributes, relations and reusable templates.
Versus paying: Trilium remains fundamentally tree-first, making typed objects and cross-cutting collections feel bolted on compared with Capacities' object-native design.
triliumnotes.org →05The build prompt
The complete build prompt, plus 11 step-by-step prompts from research to launch, a design system file, a page-by-page spec, the data model and a launch checklist.
Get the Build Kit · $9 →One-time payment. Delivered on screen and by email.
06Free open-source starting points
- AppFlowy: Active open-source workspace with local-first documents and databases.
Prices change; confirm on the vendor's site before you decide.
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