Committed to improving reading experience
About this app
Read fluently and comfortably, with simple and clear interface.
Supported Document Types: PDF, EPUB, MOBI, CBZ, FB2, XPS, TXT, HTML, OFFICE(DOCX, XLSX, PPTX), and ZIP/GZIP packages of previous documents are suppoted.
Features: · Horizontal / Vertical Flip · Continuous Scroll · Lock Stray: Keep scroll straight · Margin Crop · Focus Mode: Keep page position on flipping zoomed pages · Smarty Focus: Recognize page border bias in Focus Mode · RtL Text: Support Top-to-Bottom, Right-to-Left(TB-RL) text · Single Column: Support scanned dual-spread PDF page · Color Palette · Font Size selectable · Text Select and more operations · Table of Contents · Bookmarks · Links · Search · Share book · Remember reading states
The project is under active development.
Licensed under AGPL-3.0-or-later.
What's New in v1.27.1a.23
Imported from the F-Droid repository index.
- · include Common Vulnerabilities and Exposures(CVE) 1.25-1.27
- · improve html table render
- · decrease page margin for reflowable documents to get more render space
- · same document opened in same window in recent apps overview when opened through same route
- · improve transparent system bars display both in new Android version and older versions
- · improve page display effect
Version history
May 20, 2026 · 5.6 MB · Android API 21–35 · code 1694
Imported from the F-Droid repository index.
- · include Common Vulnerabilities and Exposures(CVE) 1.25-1.27
- · improve html table render
- · decrease page margin for reflowable documents to get more render space
- · same document opened in same window in recent apps overview when opened through same route
- · improve transparent system bars display both in new Android version and older versions
- · improve page display effect
SHA-256 00b57e242cc8ae1c576da94135aaad81e41b5094bedf74d10979490b6f7d21f1
May 20, 2026 · 4.9 MB · Android API 21–35 · code 1693
Imported from the F-Droid repository index.
SHA-256 322ca961ba62fe10d2e933a8e7c47663cb8f71b9da40e27e159f9543ee07ebd8
May 20, 2026 · 5.8 MB · Android API 21–35 · code 1692
Imported from the F-Droid repository index.
SHA-256 ff157a29128103abf81980e3017f7a7eb490bcf965ea3ae09139687173f9c72a
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- 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 net.timelegend.chaka.viewer.app 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, 1.27.1a.23 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Chaka Book 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 Chaka Book Reader, and a listing is removed when the evidence for it stops holding up.
Get Chaka Book Reader
Every source we list for net.timelegend.chaka.viewer.app 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
00b57e242cc8ae1c576da94135aaad81e41b5094bedf74d10979490b6f7d21f1
Signing certificate
796e8ad532d0bbc9c7ca0de390fae02b86c373107d07a86906ff7f3de6f08091
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.