PF-L Assist is a free app designed for smartphones and tablets to assist in setting the polar axis, essential for equatorial mounts. It enables users to adjust the field of view of their polar alignment scope PF-L II based on the specific date and time of observation, catering to both northern and southern hemispheres.

The app offers real-time indication of scale orientation and star positions, automatically computed based on observation details. It eliminates irrelevant stars from the field of view, making it easier to identify desired stars for alignment. With features like enlarged field of view and night vision mode, PF-L Assist enhances the polar alignment process for beginners and experienced users alike.