Universal Book Reader

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Mobile Systems, Inc. · com.mobisystems.ubreader_west

4.6 out of 5 (44 ratings) 10M+ downloads v4.9.1605 19.2 MB Android 4.0.3+ PEGI 16 · Medium Maturity

Download APK 19.2 MB All versions

Signature matches the Google Play version Details

Watch the Universal Book Reader trailer on YouTube

At a glance

Latest version: v4.9.1605 (1605)
Updated: Jul 18, 2026 (3 months ago)
APK size: 19.2 MB
Requires: Android 4.0.3+ (API 15)
CPU support: ARM (legacy)
Graphics: OpenGL ES 2.0+
Category: Books & Reference (app)
Listed since: Jan 5, 2016 (at least)
Permissions: 14 (1 sensitive)
Website: mobisystems.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Universal Book Reader is an app by Mobile Systems, Inc. in the Books & Reference category, listed since at least January 2016. It includes native code only for ARM (legacy), so it won't run on 64-bit-only phones such as recent Pixels.

Since version 3.8.756, the APK grew from 17.2 MB to 19.2 MB. Since version 3.0.638, the minimum Android version rose from 3.0 to 4.0.3. It asks for 14 permissions, 1 of them sensitive: modify shared storage. Compared with version 3.8.756, it adds 3 new permissions: “Google Play install referrer”, “Read Google service settings” and “Run foreground services”. The app offers in-app purchases through Google Play.

Ratings

4.6out of 544 ratings

5 ★75%
4 ★14%
3 ★9%
2 ★2%
1 ★0%

Ratings from users of the source store — not collected or verified by AAPKs.

What's new in v4.9.1605

· Introduced a fresh new look · Simplified application navigation · New long-press multi-select mode for book management

Description

From the listing uploaded by “appupdater”.

Universal Book Reader provides a comfortable and customizable reading experience for your smartphone or tablet, allowing you to read all EPUB and PDF books. The application navigation is easy with a simple, yet beautiful design. FLEXIBLE READING EXPERIENCE - SIMPLE TO CUSTOMIZE: • Beautiful reading experience - Page flipping with animations, slide transitions or no transition. • Intuitive and fast navigation - scroll slider, page pointer, table of contents and volume button page control to help you browse your books. • Customizable reading experience - multiple font types and sizes, brightness adjustment, and page orientation settings. • Easy on the eyes night reading mode. • Search your book for specific phrases or words. • Bookmark pages for quick reference later. Highlight text or leave notes for later use. • Localized in 12 languages - Brazilian Portuguese, Dutch, French, German, Italian, Japanese, Korean, Polish, Russian, Simplified Chinese, Spanish and Swedish. LOTS OF BOOK FORMATS: • Convert azw, azw3, cbc, cbr, cbz, chm, docx, fb2, lit, lrf, mobi, pdb, pml, prc, rb, tcr and txt to ePub • Convert ai, bmp, csv, djvu, doc, dwg, dxf, eps, gif, jpg, odg, odp, ods, odt, pcx, png, pps, ppsx, ppt, pptx, psd, pub, rtf, svg, tga, tiff, wbmp, webp, wmf, wpd, wps, xlr, xls, xlsx and xps to PDF SMOOTH AND EASY E-BOOK MANAGEMENT: • Bookcase view allows you to add new collections with custom thumbnails and switch between several library views to browse through your collection. • Longpress to multiselect and easily organize your books. • Integrated file browser - quickly browse and import your own EPUB and PDF books from your device, and also import entire folders of e-books. • Books can be received as email attachments and imported to UB Reader from the Preview option of the email client. • Sort books by title, author, or recent use. • Filter by currently reading books to focus on what's important right now. UNIVERSAL BOOK READER PREMIUM FEATURES: • Ad free reading. • Text-to-Speech support. • Lock (password protect) specific books in your library. • Create direct shortcuts to books on your home screen. Universal Book Reader will quickly become your favorite book reading buddy!

Version history

3 versions are listed, going back to v3.0.638. Since v4.9.1605 it requires Android 4.0.3+.

v4.9.1605 LATEST Jul 18, 2026 19.2 MB TRUSTED v3.8.756 Sep 14, 2020 17.2 MB TRUSTED v3.0.638 Sep 14, 2020 21.1 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 18, 2026.
Certificate issued to “Mobile Systems, Inc.” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature not checked yet Jul 18, 2026
Validated against Google Play Jul 18, 2026
Signed byCN=Nikolay Kussovski, OU=Mobile Systems, O="Mobile Systems, Inc.", L=San Diego, ST=California, C=US
Signing certificate (SHA-1)39:24:E1:05:9F:20:B3:1D:87:2E:5A:54:59:5B:C8:C6:11:A3:E2:B8
File MD571184ede1959b4b470bf5d5de983fcaa
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (14)

Universal Book Reader requests 14 permissions, 1 of them sensitive.

Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Add home-screen shortcuts com.android.launcher.permission.INSTALL_SHORTCUT
Alarm set alarm (custom) com.android.alarm.permission.SET_ALARM
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Prevent the device from sleeping android.permission.WAKE_LOCK
Read Google service settings com.google.android.providers.gsf.permission.READ_GSERVICES
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Wi-Fi android.hardware.wifi

Universal Book Reader APK: questions and answers

Is there a version of Universal Book Reader for older Android phones?

The current version needs Android 4.0.3 or later. Version 3.8.756 is the newest listed build that installs on Android 4.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 3.8.756 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is Universal Book Reader free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Universal Book Reader APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 71184ede1959b4b470bf5d5de983fcaa.