
Kosshi
Simple, fast outliner for Mac and iPhone.
82 followers
Simple, fast outliner for Mac and iPhone.
82 followers
Kosshi is a simple native outliner for macOS and iOS. Fast and focused outline editing.






Free Options
Launch Team

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Promoted
feels like a very honest builder story, you needed a calm, private outliner that worked the same way across Mac and iPhone, so you made one.I like the no-account/no-server approach. Outlines often hold unfinished thinking, not just polished notes.what was harder to get right: performance with large image-heavy outlines, or keeping the experience simple across both Mac and iOS?
@harshalvc_ai
Thanks, that's a kind read.
Of the two, cross-platform was the harder one. The hard part wasn't really keeping the UX simple. It was one layer deeper. The rendering engine handles layout, text, Markdown, and images in one pipeline, and getting it to run cleanly through a single shared codebase across Mac and iOS is what took the most time. A change on Mac shows up on iPhone too.
Honestly, image-heavy outlines aren't something I've pushed hard on. Kosshi is built for outlines that are mostly thinking, with images as occasional anchors. One thing I did spend time on, though, is making sure rows off-screen pay no rendering cost, and that applies to images too. So having a lot of them spread across a large outline shouldn't really be a problem.
@othman_katim
Thanks, really appreciate it!