PeakIdentify uses the currently loaded Digital Elevation Maps (DEM) (Settings->3D Terrain) to figure out which peaks are in view and to label only those that are. Due to space limitation, it starts with the highest peaks and will only place a label if it fits above the peak. If the DEM files are not loaded (because there is no network connection, for example) PeakIdentify may label peaks that are not in view (and therefore possibly not have enough room to label peaks that are in view). If the peaks you are interested in are not labeled, or if there are too many labels, you can select (filter) which peaks get labeled in a variety of ways:
Tapping (in the lower right of the view) will show three sliders:
Drag the left end to adjust the minimum height and the right end to adjust the maximum height peak label to display.
Drag the left end to adjust the minimum distance and the right end to adjust the maximum distance peak label to display.
Sometimes a mountain will have several adjacent named peaks, resulting in several close labels for the same mountain at the expense of labels for other peaks in the view. By dragging this single slider to the right you can increase the minimum angular separation between adjacent labels.
The system of units used for the sliders can be changed between metric and imperial under Settings->Units.
Note: while the sliders are displayed view alignment is disabled. To enable view alignment hide the seek bars by tapping the button at the lower right of the screen.
For more precise control over the height/distance filters, or to display a single peak, you can tap the search icon to display a specific peak or to limit the range of peaks in view to those within a given distance range and a given height range. You can enter the search using the keyboard or you can use voice commands by tapping .
Currently the list of comparison words that PeakIdentify understands is: "above", "below", "lower", "higher", "shorter", "taller", "farther", "further", "closer", "nearer", "greater", "less", "more".