Open Source Project
An open-source Markdown workspace for Android.
Kern is a Markdown workspace built for the community. It handles local files with calm typography and no cloud lock-in.
Watch Kern in Action
Quiet Markdown workspace for Android
Project Principles
Simple, local-first, no fluff.
Local File Access
Read and write Markdown files directly using Android's Storage Access Framework (SAF). No accounts or cloud databases required.
Document Typography
Read comfortably with warm canvas themes, 1.6x line spacing, high-contrast text, and JetBrains Mono rendering.
Adaptive Split View
Use a dual-pane workspace on tablets and foldables, pairing a 35% folder explorer alongside a 65% document canvas.
100% Open Source
All source code, build scripts, and issue tracking are public on GitHub under open licenses.
Privacy
Your documents stay on your device.
Kern does not upload your files to remote servers or require user accounts. Your writing stays entirely local.
Read the privacy statement →Community & Support
Get involved or ask a question.
Email gary@attach.design or open an issue on GitHub.