What's the best iOS app for reading free comics online?

WEBTOON is a leading platform for discovering and reading a massive collection of free digital comics, including manga, manhwa, and original webcomics. Its primary appeal lies in its extensive, free library where users can read thousands of series without a mandatory subscription. The app uses a vertical scrolling format optimized for mobile devices, making it easy to binge-read chapters during a commute or in short breaks. Content is organized into clear genres like Romance, Fantasy, and Slice of Life, with a recommendation algorithm that suggests new titles based on reading history. Creators are supported through a 'Fast Pass' system for early access and an ad-reward model, allowing fans to unlock episodes by watching short videos. However, the release schedule for popular series can lead to waiting periods for free readers, and some users report occasional bugs where new episodes are incorrectly marked as read. Reviews indicate the interface is generally smooth, and the ability to download episodes for offline reading is a valued feature for those with inconsistent connectivity. For readers seeking a diverse, updated catalog of comics without upfront costs, WEBTOON provides a robust and engaging experience.