Acrobat Reader
Adobe's free Android PDF reader with Fill & Sign and Liquid Mode
PDF reader app for Android: six options by type
A pdf reader app on Android can mean three different things, and the six apps in this list split along those lines. Acrobat Reader from Adobe is a full PDF tool for forms, signatures and comments. PDF Reader and Document Reader & PDF Editor, both from the developer QR Code Scanner., are office file viewers that open PDF, Word, Excel and PPT files. ReadEra, Librera Reader and Turn the Page are ebook readers that also open PDF.
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Three of the six show no ads: ReadEra, Librera Reader and Turn the Page. The last two are released under the GPL-3.0-or-later and Apache-2.0 licenses. Among the apps with a Google Play rating, scores run from 4.3 to 4.9 stars. Pick the type first, then compare apps inside it.
Apps in this category
PDF Reader
Free Android PDF viewer and editor with AI summaries and ad support
ReadEra
Free offline reader for PDF, EPUB, DOCX and DJVU with no ads at all
Document Reader & PDF Editor
Offline viewer for PDF, Word, Excel and PPT with PDF text editing
Librera Reader
Free, ad-free ebook and PDF reader with Musician's mode, F-Droid build
Turn the Page
Offline FB2, EPUB and PDF reader with paper page turns and book stacks
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Top 5 picks
Acrobat Reader
Acrobat Reader is the pick for forms and signatures. It highlights text, adds comments and sticky notes, and fills forms with Fill & Sign, while Liquid Mode reshapes text to fit the screen. It is free but carries ads and in-app purchases, and it was updated October 29, 2026.
PDF Reader
PDF Reader doubles as an office viewer: PDF, Word, Excel and PPT files found on the device are gathered in one list. Night mode and reflow mode ease long documents on the eyes, and an AI assistant helps with editing. It is free, with ads and in-app purchases. The current version is 2.1.7.
ReadEra
ReadEra suits people who read books more than they edit documents. It opens PDF, EPUB, Word, Kindle formats, DJVU and FB2 offline, with no ads and no in-app purchases. No editing tools are listed for it. Updated October 29, 2026.
Librera Reader
Librera Reader is the customizable option, at 119.6 MB. It covers PDF, EPUB, MOBI, DjVu, FB2 and comic formats such as CBZ and CBR. Its Musician's mode scrolls pages hands-free at a speed you set. The listed version, 10.0.22-fdroid, is based on MuPDF, carries no ads and uses the GPL-3.0-or-later license.
Turn the Page
Turn the Page is the small, offline choice at 14.5 MB. It imports FB2, EPUB and PDF with paper-style page turns, and shows a two-page spread on foldables or wide screens. Books can be dragged together into named stacks. It shows no ads, uses the Apache-2.0 license and was updated November 4, 2026 at version 1.7.2.
Questions and answers
Which of these PDF readers show no ads?
ReadEra, Librera Reader and Turn the Page show no ads. ReadEra also has no in-app purchases. Acrobat Reader, PDF Reader and Document Reader & PDF Editor are free but include ads and in-app purchases.
Which app is best for filling in and signing forms?
Acrobat Reader includes Fill & Sign, which lets you sign a PDF form with your finger. PDF Reader also offers signing. The ebook readers in this list are not aimed at form-filling.
Which apps work offline?
ReadEra reads books offline, and Turn the Page is an offline reader.
Related categories
Best-of lists
Start with the files you open most. If they are mostly contracts and forms, the Acrobat Reader type fits. If they are a mix of Word, Excel and PDF, look at the two office viewers. If you read books and the occasional PDF, the three ebook readers cover more formats and show no ads.
Check the update dates too. Librera Reader and Turn the Page were both updated on November 4, 2026, and Librera's F-Droid build notes support for Android 4.1 and newer, which matters on an older phone.