HAMRS can be used to log Parks on the AIR as an activator or hunter. Log to Desktops, Smartphones Mobile Devices, Tablets and more! Desktop version is free. easy to use, logging program for APPLE IOS, MACOS, WINDOWS and RASPIAN. If you use or plan to use HAMRS, the Community link (below) is the site to visit for the latest on submitted bugs, fixes and workarounds. ADIFMaster does a good (but not perfect) job of catching errors. After using HAMRS for logging my hunts and activations, I run every exported ADIF file through ADIFMaster to clean up and verify that the file is ready for submission to the POTA admin or the LOTW upload. While there are still bugs, the app works well enough for me to use it in the field and at home. Another helpful visual is color coding worked stations. As a hunter I only work CW so selecting mode was big improvement over wading through the list of stations. While hunting, HAMRS now provides the ability to select the mode of the activating station. I have been using HAMRS while activating and hunting. Sept 2021 Update: The current version is 0.11.3.