You can download GPS-H 3.2.1 from our software library for free. The program is included in Education Tools. The program's installer files are generally known as GPS-H.exe or GPSH.exe etc. This free software is an intellectual property of NRCan GSD. The following version: 3.2 is the most frequently downloaded one by the program users. Our antivirus scan shows that this download is safe.
From the developer:
GPS-H is a free program that allows GPS users to convert their ellipsoidal heights in either NAD83 (CSRS) or ITRF/WGS84 to orthometric heights H (heights above mean sea level) by applying at each location a geoid height N derived from a geoid model (or Height Transformation).
You may want to check out more software, such as MathMatic, MemBrain or roboBASIC, which might be similar to GPS-H.