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Publishing · head to head

Moon Reader vs Pressbooks

Moon Reader logo

Moon Reader

Publishing

Android ebook reader app with a one-time purchase, deep format support and no subscription or store lock-in

From
Free
Rated
-
Full reviewWebsite
Pressbooks logo

Pressbooks

Publishing

Open source book production built on WordPress, and the default tool for open textbooks

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Moon Reader it is Android only, so it is not an option for iOS, Kindle hardware or desktop-first readers.; Pressbooks self-hosting is free in licence terms only; it requires WordPress multisite administration, upgrades and backups, which is a real staff cost most institutions underestimate.
  • They diverge on capability: Moon Reader covers Broad format support, Pressbooks covers Single source, three outputs.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Moon Reader and Pressbooks actually diverge.

Attributes where Moon Reader and Pressbooks differ
AttributeMoon ReaderPressbooks
Pricing modelOne-time purchase, free ad-supported version availableOpen source, no licence fee
PlatformsAndroidWeb, Self-hosted

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Publishing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Moon Reader

  • Broad format support
  • OPDS support
  • Deep customisation
  • Cloud sync
  • Reading statistics
  • Text-to-speech

Only in Pressbooks

  • Single source, three outputs
  • Cloning and adaptation
  • H5P interactive content
  • LMS integration
  • Open source under the GPL
  • Accessibility tooling

What people use each for

The jobs each tool is most often brought in to do.

Moon Reader

  • An Android user with an existing library of EPUB or comic files who wants a better reader than their store app providesnot Pressbooks
  • Someone running a personal Calibre server who wants OPDS access from their phonenot Pressbooks
  • A reader who wants extensive font, theme and page-turn customisation not offered by store-bound appsnot Pressbooks
  • Someone who does not want a subscription and would rather pay once for a reading tool they already have content fornot Pressbooks

Pressbooks

  • A university library replacing a commercial textbook by adapting an existing open textbook rather than commissioning a new onenot Moon Reader
  • A course team that wants readings delivered inside Canvas or Moodle with embedded exercises rather than as a static PDFnot Moon Reader
  • A research institute publishing reports that must exist as a web page, an EPUB and a printable document without maintaining three filesnot Moon Reader
  • A consortium standardising open textbook production across several institutions with a shared catalogue of adaptable titlesnot Moon Reader

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Moon Reader

  • It is Android only, so it is not an option for iOS, Kindle hardware or desktop-first readers.
  • It sells no books itself, so it is only useful to someone who already has an ebook acquisition method, whether purchase, library OPDS or personal files.
  • The interface and settings menus are dense and dated compared with polished store apps like Kobo or the Everand app.
  • Development has slowed at times, and users have reported gaps between updates for newer Android versions.
  • There is no cloud account tying your library and progress together across devices beyond what you configure manually via Dropbox or Drive.

Pressbooks

  • Self-hosting is free in licence terms only; it requires WordPress multisite administration, upgrades and backups, which is a real staff cost most institutions underestimate.
  • Professional print PDF output depends on a commercial rendering engine that is licensed separately, so the genuinely free self-hosted route produces web and EPUB output but not press-quality print.
  • Design control is limited to the supplied themes unless someone writes custom CSS, so books tend to look recognisably like Pressbooks books.
  • There is no distribution, no ISBN service and no retail channel, so it produces files and web pages but plays no part in selling anything.
  • The editing experience inherits WordPress conventions, and authors working on long or heavily structured manuscripts find it slower than a dedicated writing application.

Pricing, plan by plan

Moon Reader

Free
  • Moon ReaderFree
    • Ad-supported
    • Most core reading features included
  • Moon Reader+$4.99/one-time
    • No ads
    • Additional customisation and font options
    • One-time purchase, no subscription

Pressbooks

Free
  • PressbooksFree
    • GPL licensed, self-hostable with no software fee
    • WordPress multisite administration is your responsibility
    • Print PDF export depends on a separately licensed rendering engine

Which should you pick?

Choose Moon Reader if

  • You need broad format support.
  • You want to start without paying.
  • You work on Android.
  • You also want opds support.
Moon Reader review

Choose Pressbooks if

  • You need single source, three outputs.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want cloning and adaptation.
Pressbooks review

Questions people ask

Is Moon Reader or Pressbooks better?
Neither clearly leads. Moon Reader starts at Free and Pressbooks at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Moon Reader or Pressbooks?
Moon Reader starts at Free and Pressbooks at Free.
Does Moon Reader or Pressbooks run on more platforms?
Moon Reader runs on Android. Pressbooks runs on Web, Self-hosted.
Can I use Moon Reader for free?
Both have a free tier, so you can try either at no cost before committing.
What is Moon Reader best used for?
Moon Reader is most often used for an android user with an existing library of epub or comic files who wants a better reader than their store app provides, someone running a personal calibre server who wants opds access from their phone, a reader who wants extensive font, theme and page-turn customisation not offered by store-bound apps, someone who does not want a subscription and would rather pay once for a reading tool they already have content for. Of those, an android user with an existing library of epub or comic files who wants a better reader than their store app provides and someone running a personal calibre server who wants opds access from their phone are not what Pressbooks is typically brought in for.
What can Moon Reader do that Pressbooks cannot?
Moon Reader covers Broad format support, OPDS support, Deep customisation, Cloud sync. Pressbooks covers Single source, three outputs, Cloning and adaptation, H5P interactive content, LMS integration.

Answered from the vendors’ own pages

Moon Reader: Does Moon Reader sell books?

No, it only reads ebook and comic files you already have or add via OPDS, cloud storage or local files.

Pressbooks: Is Pressbooks really free?

The software is GPL licensed and free to self-host. The hosted service is priced, and professional print PDF output requires a commercially licensed renderer, so budget accordingly.

Moon Reader: Is there a subscription?

No, Moon Reader+ is a one-time purchase; there is also a free ad-supported version.

Pressbooks: Can I sell a book made in Pressbooks?

You can sell the EPUB or the printed book through any distributor, but Pressbooks itself provides no ISBN, no storefront and no distribution.

Moon Reader: Is it available on iOS?

No, Moon Reader is Android only.

Pressbooks: Why do universities use it for open textbooks?

Because an openly licensed book can be cloned into another institution network and adapted for a different course, which turns a finished textbook into a starting point rather than a fixed artefact.

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