Goupill – Encrypted, local-first journaling with Markdown and offline support

Summary: Goupill is a free journaling app that encrypts entries locally using AES-256 and Argon2id, ensuring no cloud storage or tracking. It features a Markdown editor with live preview, six themes, Zen mode, Time Capsules, mood tracking, and offline functionality.

What it does

Goupill encrypts journal entries on the device without requiring an account or internet connection. It offers a keyboard-first Markdown editor with live preview, writing stats, and customizable themes.

Who it's for

It is designed for users seeking a private, secure journaling tool that works offline and protects their data from external access.

Why it matters

Goupill solves privacy concerns by preventing any server-side access to personal journal entries, ensuring complete local data security.