The free Apple Books app will read EPUB directly on iPhone, iPad or macOS.
If you have a Kindle device or the free Kindle app, read this recent article from PC World:
The Kindle app is free for Android, iPad, iPhone, macOS, Windows and more.
The free Kobo app and Kobo devices can read EPUB if transferred via USB from your computer. Read this official Kobo article.
See this recent article: