Folio 1.2.131 — Android preview

Folio is an open-source, local-first book and manga reader. This is the first public Android preview download on GitHub, built from commit cd433d94e8223f62824bba6266ce9f12d610c26a.

Download

Requires Android 7.0 or later. Choose one APK from Assets below:

Asset	Device
Folio-1.2.131-arm64-v8a.apk	Most current Android phones and tablets
Folio-1.2.131-armeabi-v7a.apk	Older 32-bit ARM devices
Folio-1.2.131-universal.apk	Either ARM architecture, if unsure; larger download

Installation and FAQ · Report a bug · Source and Windows build instructions

What you can try

• Import your DRM-free EPUBs and documents, or local manga archives.
• Adjust reader type and themes; save highlights, notes, and bookmarks.
• Track reading activity and daily goals; add Android reading widgets.
• Download optional voice packs for offline narration or an on-device semantic search model.
• Visit Between chapters for saved passages, a reading journal, and three small games.
• Use compatible third-party manga source extensions on Android. Folio hosts no books, manga, or extensions.

Reading your imported library does not require an account. Online sources, downloads, and optional sync need a connection. Cloud sync requires your own Firebase project. Windows has a separate portable preview release; the assets on this page are for Android.

Verification and limits

All three APKs were checked for package ID com.folio.reader, version 1.2.131 (code 185), archive integrity, matching application code, expected ARM architectures, and valid release signatures. The arm64 build has a recorded installation and startup check on one physical Android device; this is not broad device testing. The signing key matches the preceding local release.

SHA-256 signing certificate fingerprint:

fa4cc70015a5cc4c85ceffc730d6fd078c0c11f29c8bf10bc4ea26abfbed9ec4

Use SHA256SUMS.txt to verify the downloaded file. This preview is in early development; keep a library backup before updating. x86 emulator builds and DRM removal are not provided.

If you try Folio, feedback on EPUB import, reading comfort, and accessibility would help shape the next release.

Known test-suite limitation

The full shared JVM suite completed with 1,204 passed, 31 failed, and 16 skipped tests on a clean Linux runner. Several failures are in corpus-dependent tests that need local book fixtures; other assertion and lifecycle failures still require investigation. This preview is not backed by a fully passing shared test suite. The Android build passed, and the Windows package passed its fresh build and isolated startup check.

Folio 1.0.38 — Windows portable preview

Folio is an open-source, local-first book and manga reader. This is a portable Windows preview built from commit 741dc69.

Install

Requires Windows 10 x64 or later.

1. Download Folio-1.0.38-windows-x64-portable.zip from Assets below.
2. Extract the ZIP completely to a folder you can write to.
3. Open Folio/Folio.exe. Keep Folio.exe, app/, and runtime/ together.

The Java runtime is included. You do not need to install Java or compile the app. The Windows executable is an unsigned preview.

Read your own books

Import a DRM-free EPUB or supported document, adjust the typography and theme, and keep your reading place, highlights, notes, and activity locally. Folio does not provide books or manga content. Optional cloud sync requires your own Firebase project.

Android is the primary platform and has additional features. Source extensions, offline narration, widgets, and reminders are Android features. Android preview downloads use a separate version series.

Verification and limits

The package was built with :desktopApp:createDistributable. The bundled runtime, referenced launcher dependencies, embedded EXE icon, and ZIP integrity were checked. The packaged shared-code JAR matches the fresh build. A native launch using a new, isolated library profile reached its first rendered frame.

This is a startup and packaging check, not broad Windows hardware or full reader testing. The package contains no personal library or account configuration. Use SHA256SUMS-windows.txt to verify the downloaded archive. Keep a backup of your library before updating.

This is a portable build rather than an installer. It does not register file associations or set up Start menu shortcuts. Linux, macOS, and iOS are not supported runtime targets.

Installation and FAQ · Report a bug · Source code

Known test-suite limitation

The full shared JVM suite completed with 1,204 passed, 31 failed, and 16 skipped tests on a clean Linux runner. Several failures are in corpus-dependent tests that need local book fixtures; other assertion and lifecycle failures still require investigation. This preview is not backed by a fully passing shared test suite. The Android build passed, and the Windows package passed its fresh build and isolated startup check.