Tap on any verse and "Cross-References" in the verse tap menu.
This brings up the Treasury of Scripture Knowledge (TSK) for the verse selected. The TSK offers a number of passages that correlate to portions of the chosen verse.
This tool is laid out with the full verse listed first, followed by anchors to which the TSK links correlating passages. In the example below, the TSK for Psalm 138:2 has anchors for "toward," "and praise," and "for thou hast" with a list of verses correlating to each anchor. [Note: Sometimes the correlations relate to the anchor itself and sometimes to an idea that the anchor is used to mark.]
Tapping on an anchor scrolls you down to the list of verses the TSK has linked to that anchor.
Tap on the up arrow to return to the top of the TSK entry.
Tap on the home button to return to the passage of scripture.