What you seeis what stays.
Koimark is a local-first, WYSIWYG Markdown editor. What you see on screen is exactly what ends up in your file.
The interface is in Chinese for now. English is on the way.
Read this alongside [[On Writing]]. Slow down, and the trace in the water shows.
What you save is what you saw.
Other editors promise smooth writing and a calm interface. Koimark promises one thing: what you see, saved and reopened, stays the same. When it can’t keep that promise, it tells you.
Checked on every save
Each save is read back and compared with the screen. If it doesn’t match, Koimark tries another way of writing it; if it still doesn’t, it saves anyway and tells you.
Your syntax, untouched
Obsidian wikilinks, tags and callouts, YAML front matter, comments and unfamiliar HTML are all written back as they were. Files you only open are never written.
No lock-in
Plain .md files on your own Mac. No account, no cloud. Open them with any other tool and they just work.
Open. Edit. Save. Open again.
On the left, the file. On the right, Koimark. Edit and save, and everything on the left is still there.
--- tags: [reading] ---# Reading notes Read with [[On Writing]]. #reading > [!note] > Slow down, and the ==trace in the water== shows.
Read with On Writing. #reading
Everything you need, out of the way.
- WYSIWYGType ## for a heading, **bold** turns bold. No split preview.
- TablesEdit in the cell, add and remove rows and columns, Tab between cells.
- Math and diagramsKaTeX and Mermaid, with the source shown only when your cursor is inside.
- Code blocksSyntax highlighting, with a language label you can change in place.
- Tasks and calloutsClickable checkboxes; callouts colored by type.
- Images and attachmentsPaste or drop them in; they’re saved to an assets folder next to your note.
- File tree and outlineOpen a whole folder; hide the sidebar whenever you like.
- TabsSeveral notes in one window, with a dot on the ones not yet saved.
Why Koimark
A koi swims through; the water keeps moving, but the trace it leaves stays.
Writing is leaving marks in the stream of your thoughts.
Koimark keeps those marks exactly as you left them.
Questions
Will it change how my files are formatted?
Your content and how it looks won’t change. In files you edit, a few writing habits may be normalized, such as list markers or extra blank lines; they read exactly the same. Files you only open are never written.
Does it work with Obsidian?
Yes. Open your vault folder directly; wikilinks, tags, callouts and YAML front matter are written back as they were.
Where are my files? Do I need an account?
On your own Mac, as plain .md files. No account, and nothing goes through a server.
Is the interface available in English?
Not yet. The interface is in Chinese for now; an English interface is on the way. Your files can be in any language.
Windows or Linux?
macOS only for now.
How much does it cost?
$6.99, once. No subscription, and every future update is free. One license covers 3 Macs. Try it free for 30 days first.
What happens to my files after the trial?
They stay right where they are on your Mac, as plain .md files you can open in any editor. Koimark itself needs a license to keep working; anything you’re editing when the trial ends can still be saved.
Can I get a refund?
As a digital product, purchases are generally non-refundable, so please use the 30-day free trial first. If you bought twice by mistake, or your license truly won’t activate, write to [contact email].
I got a new Mac. What now?
Choose “Deactivate this Mac” on the old one to free up a seat, then enter the same license key on the new one. If the old Mac is gone, write to us and we’ll deactivate it for you.
What you see is what stays.
$6.99, one-time purchase · 30-day free trial · 3 Macs
[Version] · [Requirements] · [Size] · Chinese interface for now · Generally non-refundable