Mimir vs. Capacities
Mimir vs. Capacities: plain pages and bullets, or typed objects with fields. Where notes live, price, and which to choose.
Capacities organizes notes as objects of different types: a person, a
book, a meeting, or a type you define. Each type has its own fields and
layout, and a daily note ties each day’s writing together. Mimir has one
kind of thing, the bullet, on pages joined by [[wikilinks]].
Checked on 2026-10-11.
Which to choose
Choose Mimir if you want to write without deciding what kind of thing each note is. Your notes stay on your device and work offline, and on iPhone and iPad you write, link, and search the same as on a Mac. Cloud Sync is a one-time purchase.
Choose Capacities if you want typed objects with their own fields, an AI assistant, free sync on every plan, or an app in the browser and on Windows, Linux, and Android. Its mobile app works as a companion to the desktop app.
Capacities suits notes that need structure. Mimir suits writing and linking.
At a glance
| Mimir | Capacities | |
|---|---|---|
| Platforms | Mac, iPhone, iPad | Web, Mac, Windows, Linux, iPhone, iPad, Android |
| Where notes live | One database file on your device | Capacities’ servers, with offline access |
| Price | Free. Cloud Sync is a one-time purchase. | Free with sync. Pro is $9.99 a month. |
| Status | Active | Active |
Where Capacities is heading
Capacities releases updates every month. Its August and September 2026 releases added larger AI plans, version history, PDF annotation, and audio recording with transcription.
Price
The free plan includes unlimited notes, sync across all devices, offline use, and 5 GB of uploads. Pro costs $9.99 a month, with 16% off yearly, and adds an AI assistant, tasks, queries, calendar integration, and version history. Believer, from $12.49 a month, adds early access to new features. A larger AI budget is an add-on, from $8.33 a month billed yearly.
Mimir is free on every device. Syncing between devices is the one paid feature, a one-time purchase rather than a subscription.
What they share
- A note for each day, as a place to start writing.
- Links between notes, and a list of what links to each one.
- Search across everything you wrote.
Where they differ
- In Capacities, you decide what kind of thing each note is, and give each type its own fields. Mimir has pages and bullets and no types or fields.
- Capacities keeps your notes on its servers and caches them for offline use. Mimir keeps your notes in a file on your device.
- Capacities Pro includes an AI assistant that can chat about and edit your notes. Mimir has no AI built in.
- Capacities runs in any browser and on Windows, Linux, and Android. Mimir runs on Mac, iPhone, and iPad today.
What people say
People praise Capacities for being easier to start with than other structured tools, and for a generous free plan. The common complaint is that the mobile app does less than the desktop app.
On iPhone and iPad, Capacities has 4.3 out of 5 stars from 114 ratings on the US App Store. Reviewers call it a companion to the desktop app: you can’t create new object types on it, and text selection feels clumsy.