I have loaded the 805, 905, 935 and 935+ software and all are fairly simple and similar to CHIRP. Two observations I made vs CHIRP is there is no "copy/paste" feature ( I was able to load a 935 profile into the 935+ software though) and the label field is all the way to the right( a minor gripe for me but it's fine if you pay attention) I downloaded all the software from BTWR site and have had no issues.