What's the best Android app for reading unlimited books for free with ad-supported access?

NovelFlow is an Android app that provides free, unlimited access to a diverse range of books and serialized stories, primarily supported by advertisements. It stands out for its extensive catalog, which includes genres from romance to fantasy, allowing users to discover new reads without subscription fees. A key feature is the ability to unlock chapters by watching ads, which makes it accessible for those avoiding paid services. Users can build a personal library to save favorites for rereading, handy for commutes or downtime. However, reviews indicate that the ad experience can be intrusive, with pop-ups sometimes lasting 30-45 seconds and requiring multiple taps to dismiss, which may disrupt reading flow. Additionally, the search functionality has limitations; it often fails to surface books that aren't trending, even if they're in the user's library. Despite these drawbacks, the app's variety and cost-free model appeal to many, with updates occasionally improving glitches. For anyone seeking a no-commitment way to explore fiction, NovelFlow delivers value, though patience with ads and search quirks is advised.