Read EPUB files on an iPhone without installing an app
An iPhone will happily open an EPUB in Apple Books, and if you live entirely inside Apple's ecosystem that is a reasonable place to keep your library. It is a poor answer if you also read on a Windows laptop, an Android tablet or a work machine — because Apple Books exists nowhere else. Scrolla runs in Safari, so the reader is the same on the phone in your pocket and the desktop on your desk.
Opening an EPUB on the phone
- From the Files app — tap Import, and the iOS file picker gives you iCloud Drive, On My iPhone, and any other storage provider you have connected.
- From a link — paste a URL ending in .epub. Useful for Project Gutenberg and Standard Ebooks, which both serve direct file links.
- From an email or message — save the attachment to Files first, then import it.
Reading comfortably on a small screen
EPUB is reflowable, so text is laid out for the screen it is on rather than scaled down from a fixed page the way a PDF is. Font size, family and line spacing are adjustable, and the warm theme is worth finding before a long night session — it drops the blue end of the spectrum without the muddy grey that a plain dark mode gives you.
Tapping through chapters uses the book's own table of contents, so a long non-fiction book stays navigable.
Where this beats an app, and where it doesn't
It wins on reach: reading is free on iPhone, Android, Windows, Mac and Linux alike, because the reader is a web page rather than a platform app. Nothing to install, and no App Store account involved. With Premium, the same library, highlights and page position follow you across all of them.
Apple Books wins on offline. It downloads a book to the device and reads it in a tunnel; Scrolla needs a connection today, with offline support still to come. If most of your reading happens without signal, that matters more than cross-platform reach.