A document reader for PDF and E-Books
About this app
Episteme Reader is an offline-first, privacy-focused document and e-book reader that supports PDF, EPUB, MOBI, AZW3, Markdown, HTML, and plain text.
Features:
• Documents: View PDF, Markdown (MD), TXT, and HTML files.
• E-books: Read EPUB, MOBI, and AZW3 files using native parsing.
• PDF Modes: Vertical Scroll and Paginated views.
• Annotations: Draw directly on pages (ink, highlighter, eraser) or add text notes.
• Customization: Adjust font size, margins, and import custom fonts (.ttf, .otf).
• Organization: Built-in library management and Text-to-Speech (TTS) support.
This is a completely free and open-source (OSS) app built natively using Jetpack Compose.
Licensed under AGPL-3.0-only, by Aryan.
What's New in v1.0.50-oss
Imported from the F-Droid repository index.
Version history
Jun 16, 2026 · 38.4 MB · Android API 26–35 · code 54
Imported from the F-Droid repository index.
SHA-256 1c015ecde6ba4550bcfc63afb70a1a85fc8221ab65403aa74b6b11a1e7465a15
May 23, 2026 · 37.5 MB · Android API 26–35 · code 53
Imported from the F-Droid repository index.
SHA-256 020f9e2cb13c1321bf99663fe6b5418049fcc1a9819f7c8f8424e72761598655
May 18, 2026 · 36.8 MB · Android API 26–35 · code 52
Imported from the F-Droid repository index.
SHA-256 197642c1f738177106af6016814c1c0eaed94355e1fe242581e200f65fbc1e88
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.aryan.reader.oss is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0.49-oss is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Episteme Reader first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Episteme Reader, and a listing is removed when the evidence for it stops holding up.
Get Episteme Reader
Every source we list for com.aryan.reader.oss is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
1c015ecde6ba4550bcfc63afb70a1a85fc8221ab65403aa74b6b11a1e7465a15
Signing certificate
4d77f55745749b04fcbe9a60e1a2edca5dd0cfbbd72bb58ce0dd156cb1b814c9
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.