Mobile Software →Coordinate Master v8.7

This powerful geodesy app allows you to convert coordinates between many of the world's coordinate systems, compute geoid offsets, and estimate the current or historic magnetic field for any location.
It also includes a calculator tool as well as surveying tools to compute the point scale factor, grid convergence, traverse, inverse, and sun angle. You can also store multiple points and compute boundary length and area on them, or import/export them to CSV files.
The app either takes manual coordinate input or uses your current GPS location. The computed location can be displayed in Google Maps via your web browser with a single button press. It also supports MGRS grid references.
The app can also compute the geoid height offset for a given location, using the EGM96 model. Geoid offset can be subtracted from the height reported by GPS to give your actual height above sea level.
System Requirements:
Requirements: Android 4.0+
Home Page-

https://play.google.com/store/apps/details?id=binaryearth.coordsystool&hl=en