Moon+ Reader

Review by eFreeware

Most ebook apps on Android ask you to accept how they display a book. Moon+ Reader takes the opposite approach: nearly every part of the reading experience, from line spacing and page-turn animation to which hardware key does what, is something you can adjust. That level of control is the app's defining feature, and it is the reason it has held a place on Android for so long.

It is a free download in the Books & Reference category, with ads and in-app purchases, and a paid pro version that adds a set of extras. Across its lifetime it has passed 10 million installs and holds a 3.5 average from more than 269,000 ratings, which suggests a large audience with mixed feelings about parts of it. If you keep a big pile of ebook files on your phone, or you read from online libraries and want the page to look the way you like, this is built for you.

One reader for almost every file you own

The format list is unusually long. EPUB, PDF, DJVU, AZW3, MOBI, FB2, PRC, CHM, CBZ, CBR, UMD, DOCX, ODT, RTF, TXT, HTML, MHT and Markdown are all named, along with WEBP images and RAR or ZIP archives, plus OPDS catalogs. In practice that means the files you have collected over the years, including comic archives in CBZ and CBR, do not need converting before you can open them.

The app also reads from online ebook libraries and supports OPDS, so you can pull titles from a catalog rather than only from local storage. Local books get a smooth scrolling mode as an alternative to page turns. For anyone whose library is a folder of mismatched files rather than a store account, that breadth is the main argument for installing it.

EPUB3 titles with embedded video and audio are supported, so a book that includes media is not reduced to plain text. The developer has also been fixing edge cases in recent releases, including content loading for EPUB files with a broken table of contents and comic book info imports in version 10.7.

Tuning the page until it reads the way you want

Display settings cover line spacing, font scale, bold, italic, shadow, justified alignment, alpha colors and a fading edge. There are more than ten themes built in with a day and night switcher, and the brightness can be adjusted by sliding a finger along the left edge of the screen, with gesture commands available for other actions. Justified text alignment and hyphenation are both supported, and the app can indent paragraphs, trim unwanted blank space and apply what the developer calls eye-health options for long sessions.

Paging is just as flexible. You can turn pages by touching the screen, using the volume keys, or even the camera, search or back keys. The app maps 24 customizable operations to 15 events, covering search, bookmarks, themes, navigation and font size, so a swipe or a key press can be assigned to whatever you use most. Five auto-scroll modes are available, including a rolling blind mode and scrolling by pixel, line or page, with speed controlled in real time.

Page turns themselves can be animated, with five flip animations and adjustable speed, color and transparency. A dual page mode handles landscape screens, and all four screen orientations are supported. There is also a reading ruler in six styles for keeping your place on a busy page. The volume of options is the point, though it also means the app rewards readers who are willing to spend time setting it up rather than accepting defaults.

Notes, lookups and keeping your place across devices

Highlighting, annotation, a dictionary, translation and sharing are all part of the reader. You can look up or translate a word without leaving the book, and share a passage or an annotation. Bookmarks are supported too, and version 10.7 added the option to disable or enable the quick bookmark in the top-right corner, which suggests the developer is listening to how people actually use the app.

For people who read on more than one device, backup and restore go to the cloud through DropBox or WebDav, and reading positions sync between phones and tablets. That is the feature that makes the app practical for a phone-and-tablet routine, where you want to pick up the same book on either screen without hunting for your place.

The bookshelf organizes titles by favorites, downloads, authors and tags, with custom book covers, search and import. A My Files tool handles book files and other files in a file-manager style, which some readers prefer for organizing a library. The app is localized in 40 languages, so the interface is likely to be available in the language you read in.

What you need before the first book opens

The app asks for All Files Access, and the developer explains why: the permission lets it read and manage ebook documents stored in any folder, save PDF annotations back into PDF files, and save books from network libraries, cloud services and websites to local storage. The same permission supports the My Files tool for managing book files. If you want the app to reach a library scattered across your device's storage, that access is the mechanism.

Beyond that, the requirements are modest. Cloud backup and position syncing rely on DropBox or WebDav. The pro version is where several conveniences live, including an ad-free experience, text-to-speech with shake-to-speak support, more themes, background images and fonts, reading statistics, a customizable reader bar, headset and Bluetooth key control, name replacement and role reversal, multi-point touch, a startup password option, book shortcuts on the home screen, annotation and highlight sharing, email support and widget shelves for grouping favorite books.

That split is worth understanding before you commit. The free app is functional and broad, but the paid tier is where the app's more specialized tools sit.

Readers who will get the most from it

This app is for people with a real library rather than a single store account: readers who own EPUB, MOBI, PDF or comic files and want one place to open all of them. It is also for tinkerers, the sort of reader who will map gestures, set auto-scroll speed and pick a theme rather than accept whatever the app ships with. If you read for long stretches, the brightness gesture, eye-health options and reading ruler are the kinds of details that matter.

It suits readers who move between a phone and a tablet, since position syncing and cloud backup are built in. It also suits anyone reading in a language other than English, given the 40 localizations. The 3.5 average from a large rating pool is a reminder that a feature-heavy reader will not please everyone, and the ad-supported free version plus the pro upgrade is the trade-off the developer has chosen.

The app has been updated as recently as July 2026, with version 10.7 bringing pagination based on character size, better comic book info imports, improved loading for EPUB files with broken tables of contents, the corner bookmark toggle and a fix for PDF annotations not saving when switching between recent books. That release cadence is relevant if you are choosing a long-term home for your library.

A reader worth configuring for a large library

Moon+ Reader is not the simplest way to open an ebook on Android, and it does not try to be. What it offers is range and control: a long list of supported formats, deep visual and paging settings, annotation and lookup tools, and syncing across devices. The cost is a free version with ads, a pro upgrade that holds several of the more specialized features, and a setup that rewards patience.

If you have a folder of books in mixed formats, read comics as well as novels, or want your page to look exactly the way you like, this is a strong fit. If you want to tap a book and start reading with no decisions to make, a lighter reader will feel easier. For the library-keeper and the tinkerer, Moon+ Reader is worth installing and worth the time it takes to shape it.

What's new in version 10.7

v10.7 ● New "Pagination based on character size" option ● Optimize comic book info reference import ● Improve content loading for broken TOC epub books ● Allow disable/enable top-right corner quick bookmark ● Fix pdf annotation doesn't save issue while switching recent books