Octarine

Rajat · A Markdown note-taking workspace for capturing ideas, organizing notes, and working with files stored locally.

CaskWriting & NotesApple silicon · Intel

Homepage

From homebrew/cask

30-day installs: 47; #1159 in App
1-year installs: 911; Last 365 days
Latest version: 0.54.0; 23 hours ago · Oct 22
Download size: 23MB; arm64 / x86_64 · dmg
Release cadence: Weekly; 1 release in 30 days

Octarine is a Writing & Notes app for Mac. It is made by Rajat.

Quick facts

Chips: Apple silicon · Intel
Price: Free with in-app purchases · Price details
Developer: Rajat
Install: brew install --cask octarine
Homebrew: Available; updated by Homebrew
Also known as: octarine

These facts were checked on or after Oct 22. See each source

About

Octarine is a Markdown-based note-taking workspace for capturing ideas, writing, and organizing information in files you control. Its official site describes notes as plain Markdown that can stay local.

Capture thoughts with Quick Capture, or save rough ideas and links to an Inbox to sort later.
Organize recurring kinds of notes with Note Types and properties; create Views that filter, sort, or group notes.
Search note titles and contents, and link to specific headings in notes.
Write with split panes to keep a source beside a draft. Ask Octarine can propose note changes for you to review.

Install the macOS app with Homebrew Cask:

brew install --cask octarine

The cask installs Octarine.app in /Applications. Octarine is a graphical application, not a command-line note editor. The supplied cask targets macOS and provides downloads for both Apple Silicon and Intel Macs. The official site advertises a 7-day Pro trial; this entry does not characterize other plan terms.

Sources: Octarine · Homebrew Cask

Octarine price and purchase options

Prices OpenNavo has checked, by region, edition and billing period, with sources and dates. OpenNavo keeps no price history and never calls a price the lowest.

Edition	Price	Region	Where to buy	Checked
—	Free with in-app purchases	—	Official websiteoctarine.app/pricing	Oct 22

System requirements

macOS	Version	Chips	Download	Source
Build for macOS 27, 26, 15, 14, 13, 12, 11	0.54.0	Intel	pub-3d35bc018fc54f11bde129e3e73e8002.r2.dev/0.54.0/intel/octarine_0.54.0_x64.dmgSHA-256 `f69c6e77f9251d487913d6c7c1dec62c928c23d8648cb5f2c958521ffad025f4`	HomebrewChecked Oct 23
Build for macOS 27, 26, 15, 14, 13, 12, 11	0.54.0	Apple silicon	pub-3d35bc018fc54f11bde129e3e73e8002.r2.dev/0.54.0/arm/octarine_0.54.0_aarch64.dmgSHA-256 `32e6a52094e1622c4b74d112bf8921e0edacb6734d3901dabe4cab98436d335c`	HomebrewChecked Oct 23

How to install Octarine on Mac

In Terminal, run: brew install --cask octarine
Homebrew installs the app in your Applications folder.

Install without Homebrew

Download the file Homebrew uses for your chip: Apple silicon Intel

SHA-256 only checks that the download is complete; it is not a security certification. See the SHA-256 and download address

Uninstall Octarine and optional data cleanup

Uninstall command

brew uninstall --cask octarine

A regular uninstall removes the app and keeps its settings and caches.

Deep clean (optional)

Uninstall command

brew uninstall --zap --cask octarine

--zap also deletes the settings, caches and other files listed in the Homebrew definition. They can include data shared with other apps and cannot be restored, and it does not guarantee that nothing is left. Back up any data you need first. To keep settings and caches, leave out --zap.

Files Octarine can leave on your Mac (5)

Files and folders: ~/Library/Application Support/Octarine; ~/Library/Caches/Octarine; ~/Library/Preferences/Octarine.plist; ~/Library/Saved Application State/Octarine.savedState; ~/Library/WebKit/Octarine

These entries come from the Homebrew definition, checked Oct 23. They say what it declares, not what is on your Mac.

What’s new in 0.54.0

New OpenNavo editorial

Ask Octarine gains MCP integrations for Linear, GitHub, Notion and URL-based MCP servers. Adds ordered note merging and Quick Capture appending to any note. On macOS, adds window positioning shortcuts and standard tiling options; integration credentials move to app data, avoiding keychain password prompts.

See all 98 releases

Octarine security facts

Only facts that can be checked, each with its source and date. This is not a safety certification. To check the files you downloaded, scan them on your Mac with OpenNavo.

Distribution: Homebrew

Scan with OpenNavoOpens a scan preview in the OpenNavo app; you decide whether to start it. Learn about Security

Install Details

Tap: homebrew/cask
Download URL: https://pub-3d35bc018fc54f11bde129e3e73e8002.r2.dev/0.54.0/arm/octarine_0.54.0_aarch64.dmg
SHA-256: 32e6a52094e1622c4b74d112bf8921e0edacb6734d3901dabe4cab98436d335c
Homebrew definition: github.com/homebrew/homebrew-cask/blob/HEAD/Casks/o/octarine.rb
formulae.brew.sh: formulae.brew.sh/cask/octarine

Installation and removal contents

Install app
Source file: Octarine.app
Declared destination: /Applications/Octarine.app
View full declaration
```
{
  "app": [
    "Octarine.app"
  ],
  "target": "/Applications/Octarine.app"
}
```

Remove user data zap

View full declaration

{
  "zap": [
    {
      "trash": [
        "~/Library/Application Support/Octarine",
        "~/Library/Caches/Octarine",
        "~/Library/Preferences/Octarine.plist",
        "~/Library/Saved Application State/Octarine.savedState",
        "~/Library/WebKit/Octarine"
      ]
    }
  ]
}

Questions about Octarine

Is Octarine safe?

Octarine is in Homebrew’s official catalog and has not been disabled. Since September 2026, Homebrew disables apps that fail macOS Gatekeeper checks. When installing, Homebrew checks the download from pub-3d35bc018fc54f11bde129e3e73e8002.r2.dev against its SHA-256 checksum. It was installed 47 times through Homebrew in the last 30 days.

Is Octarine free?

Octarine is free to download and offers in-app purchases. Source: octarine.app/pricing, checked Oct 22.

How do I completely uninstall Octarine on a Mac?

Run brew uninstall --cask octarine. To delete its settings and caches as well, run brew uninstall --zap --cask octarine. --zap also deletes the settings, caches and other files listed in the Homebrew definition. They can include data shared with other apps and cannot be restored, and it does not guarantee that nothing is left. Back up any data you need first. To keep settings and caches, leave out --zap. That also deletes 5 files and folders, including ~/Library/Application Support/Octarine.

Does Octarine run on Apple silicon (M1 and later) Macs?

Yes. Homebrew downloads separate builds for Apple silicon and Intel Macs.

Where does Octarine store its settings and data?

Its settings are in ~/Library/Preferences/Octarine.plist. Its data is in ~/Library/Application Support/Octarine. These locations come from Homebrew’s clean-up list.

What is the latest version of Octarine?

The latest version is 0.54.0, added to Homebrew on Oct 22. Run brew upgrade --cask octarine to update it.

Sources

Every fact on this page names its source and check date. Facts past their validity read “as of” their date and are no longer stated as current.

Homebrew definition: github.com/homebrew/homebrew-cask/blob/HEAD/Casks/o/octarine.rb · Checked Oct 23
formulae.brew.sh: formulae.brew.sh/cask/octarine
Price: octarine.app/pricing · Checked Oct 22

Install command

brew install --cask octarine

Token: octarine
Homepage: octarine.app
Updates: Updated by Homebrew

Monthly installs

Installs are slowing; most existing users update through the app itself

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Item	Value
Last 30 days	47 installs
90-day avg	54 installs
1-year avg	76 installs