FoldRender: Repo Reader

DUOCODE TECHNOLOGY

About this app

FoldRender turns your phone into the reading half of a development loop. Point it at a folder — a cloned repository works best — and it renders everything inside: Markdown, source code, structured data, notebooks and documents, without a browser in the middle.

Unfolded on a foldable, the file tree sits on the left and the document on the right. Folded, it collapses to a single reading column. Folding is a pure relayout, so the app never restarts and your place on the page never moves.

WHAT IT RENDERS
• Markdown with GitHub extensions — tables, task lists, strikethrough, autolinks, footnotes, YAML front matter, mermaid diagrams, LaTeX math and callouts
• Source code in 60+ languages, syntax highlighted, with line numbers, wrap toggle and a copy button
• JSON, YAML and TOML, structured rather than dumped as raw text
• CSV as a real table
• Images, PDFs, HTML and log files
• Jupyter notebooks, cells and outputs together

GIT ON THE PHONE
Sign in with GitHub and clone a repository straight to the device. Pull, read a diff, stage, commit and push — all without opening a laptop. Sign-in uses GitHub's own OAuth flow; the token stays in app-private storage and never reaches us.

BUILT NATIVE, NOT A WEBVIEW
FoldRender is Kotlin and Jetpack Compose all the way down. A 5 MB document composes only what is on screen, text selection is the system's own, and theming follows your device instead of fighting a stylesheet. That is what makes large files and constant folding feel unremarkable.

QUIET BY DESIGN
No account. No analytics. No ads. No telemetry of any kind. Your files are read through Android's own folder picker and stay on your device; the only thing the app talks to is GitHub, and only when you ask it to.

FOR THE LOCAL LOOP
An optional endpoint lets a machine on your own network push a document straight into the reading pane — handy when a build, a script or an agent produces something you want to read immediately. It is off by default, token-protected, local-network only, and only ever accepts documents.

Android 11 and above. Optimized for the Samsung Galaxy Z Fold 7 and other foldables; works on any phone or tablet, using the single-column layout where there is no room to split.

What’s new

First public release. Open a Git repository on your phone and read it: Markdown rendered with headings, tables, code blocks and Mermaid diagrams, plus the plain files around it. Signing in with GitHub is optional and only enables sync — reading works without an account.