All Document Reader is a read-only viewer for the files people actually send you. PDF, Word, Excel, PowerPoint, OpenDocument, EPUB, plain text, code, images and ZIP archives all open in the same app, and every one of them is rendered on your phone. Tap an attachment in email, chat or Downloads and it opens straight away — there is no account, no sign-up and no internet connection needed. The app also sorts the documents already on your device into categories, keeps track of what you opened last, and puts the ones you care about a single tap away.

Here are just a few of the great features of All Document Reader:

• One app for every common format: PDF, DOCX, XLSX, PPTX, ODT, ODS, ODP, RTF, EPUB, Markdown, HTML, code, images and ZIP — without installing an office suite alongside it.
• A PDF reader that does the work: text search, outline, bookmarks, go to page, working links, password-protected files, night mode, select and copy text, and printing.
• Spreadsheets that stay readable: sheet tabs, frozen headers and merged cells in a grid that keeps scrolling smoothly through thousands of rows.
• Your library, already sorted: every document on the device grouped by type, with search, sorting by name, date, size or type, plus Recent, Favourites and a folder browser.
• Picks up where you left off: the last page and your bookmarks are remembered per file, and you can switch that off in Settings.
• Comfortable for long reading: light, dark and sepia reading themes, adjustable text size, line wrapping, keep the screen on, and an orientation lock.

If you are tired of installing a different app for every attachment, this is the one to keep. Download All Document Reader and open the lot.

Every document is opened on the phone itself, so nothing is uploaded and there is no tracking, no sign-in and no cloud account. Storage access is optional: if you would rather not grant it, you can still open files through Android’s own picker or directly from email, chat and your browser.