GrayCat

Apps

Native apps for Apple platforms, made independently. GrayCat tools take a local-first approach to Markdown writing, plain-text editing, local music, and PDFs; KneeDaily is built for knee sports-medicine literature.

GrayCat apps

Overview

Writing and publishing

GrayCat Markdown

Write and preview Markdown, check publishing layouts, export to several formats, and sync documents through iCloud. AI tools are always optional.

Mac · iPhone · iPad View and download

Inside the app

Overview

Plain-text editing

GrayCat Text

Edit plain-text files while preserving their encoding and line endings, with log viewing, search, comparison, and recovery. Very large files open as read-only previews.

Mac View and download

Inside the app

Overview

Local music library

GraycatTunes

Play and organize your own music files on your Mac—no streaming account required.

Mac View and download

Inside the app

Overview

PDF tools

GrayCat PDF

Read original and translated pages side by side, with tools for OCR, merging, compression, annotations, signatures, and export.

Mac View and download

Inside the app

Knee sports-medicine literature

Overview

Knee sports-medicine literature

KneeDaily

Daily selections from the knee sports-medicine literature, with topic tracking, in-depth articles, PubMed search, and a personal library.

For professional literature reading and organization. It is not for diagnosis and does not provide treatment advice or clinical decision support.

iPhone · iPad View and download

Inside the app

The current interface is primarily in Simplified Chinese.