What's the best Android app for cataloging a large personal book collection without storage limits?

Bookshelf is an Android application developed by SquidBit that serves as a virtual library for organizing book collections. Its standout feature is the complete absence of storage limits, allowing users to catalog an unlimited number of books—a significant advantage over many competing apps that impose caps. This makes it particularly useful for real-world scenarios like documenting entire home libraries, tracking loaned books, or maintaining an inventory for insurance purposes. The bulk addition functionality simplifies importing multiple titles at once, which is efficient after book purchases or when transitioning from other cataloging tools. However, reviews indicate that the search function requires using separate fields for authors or titles, rather than a unified search bar, which can hinder quick lookups. Some users also note the lack of a built-in stopwatch for time tracking, a feature found in some alternatives. Despite these limitations, the app's high 4.7 rating reflects positive feedback on its reliability and ease of use. For anyone prioritizing expansive storage and straightforward cataloging over advanced analytics, Bookshelf provides a practical solution for managing personal book databases on Android.