PocketTransit Lite is a free version of R&W Scientifics popular PocketTransit Pro. PocketTransit Lite records the orientations of planes, lines, and theodolite angles, with location information, metadata, and more. PocketTransit Lite allows easy email export of data to spreadsheet-compatible file format. PocketTransit Lite is optimized for the iPhone 5 or 6 but can be installed on the iPhone 4S.
PocketTransit Lite:
Mimics a traditional geological compass.
Compass, GPS-based Theodolite, Project, Analysis, and Map functions.
Project-based storage of Compass and Theodolite records, with appropriate metadata.
Email export of Project data and Stereonet images.
Map display of data.
Plane and line measurements recorded in the same record structure, with optional kinematic lineation sense (up, down, unknown).
Live data display.
Simple stereo net plotting.
Data-type or data-quality based color classification in stereonet display.
Getting Started Info found on Compass Settings page (About PocketTransit Lite).
WARNING: All smartphones create a strong magnetic field which must be properly calibrated lest the measured data be compromised. Test your smartphone under controlled circumstances to understand its individual response. PocketTransit Lite is not a subsititute for geological field experience and proper geological training!