Which Android app offers in-depth Bible study tools with commentaries and original language resources, all for free?

Blue Letter Bible is a comprehensive, no-cost digital toolkit designed for users who want to move beyond simple reading into detailed scriptural analysis. Its standout feature is a deeply integrated reference system. Tapping any verse opens a menu to access interlinear texts, lexical definitions for Hebrew and Greek words, and a wide selection of commentaries, including works by Charles Spurgeon. For someone preparing a Bible study lesson or trying to understand the nuance of a particular passage, having these academic resources linked directly to the text streamlines the research process considerably. The app also supports a generous library of Bible translations available for free download, useful for comparative reading offline. However, the interface operates differently from some more narrative-focused Bible apps; actions like highlighting require using a pop-up menu instead of direct gesture controls, which some reviews indicate takes brief acclimation. A more significant consideration is data management: user notes and highlights are not automatically synced to a cloud account by default, which has led to data loss for some users when switching or losing a device. Enabling manual backup within the app's settings is a recommended step. Despite these operational quirks, the depth and breadth of free scholarly content make it a uniquely valuable resource for serious study.