Writing without friction
A fast, lightweight tool for writing and planning.
In Markdown that stays yours.

Carefully crafted features that bring joy to your workflow.






Small Footprint. But doesn't lack a punch.
Contexts that don't collide
Separate work and personal with isolated workspaces. Each has its own settings — no shared state, no mixing.
Organization beyond folders
Find related content anywhere in your workspace with hierarchical tags. One click surfaces everything connected — in search or graph.
Building blocks, not blueprints
Insert reusable content blocks anywhere in your notes. Simple markdown files you can use once or a hundred times.
Loved and trusted by many
Been using Octarine as my daily driver for the past few days and I'm impressed. Seriously considering jumping from Noteplan.
Oh my god it is perfect! Thank you so much!! I love how it renders the diagram under the definition instead of replacing it, perfect!! You have a user for life!
Octarine looks FRESH! I've tried a lot of note taking apps. Got a good feeling about this one 🔥
After testing upwards of 75+ apps, I settled on Octarine. From my personal needs matrix, Octarine was the only app that checked all my boxes aside from missing iOS apps. I love this app!
I really like Octarine's purpose of having all of its features built-in. A lot of Octarine is much like how I've set up Obsidian-- except I didn't scramble for extensions that depend on each other to work
Been an early adopter of Octarine and have used it daily ever since. Octarine is a delight to use! Lightweight, beautiful, highly performant!
I rely on the Octarine app every day. I use it to jot down my daily plans, sprint plans, and project checklists before I start working. Having a tool that's so easy and intuitive to use really reduces a lot of friction in my workflow. This is truly the next generation of note-taking for developers.
Notes are stored as markdown files on device. Always yours.

