Re: Map software
Some map software on phones/tablets is excellent, away from Google.
OSMand+ is amazing (over a decade ago I bought both the software and its contour plugin in a sale for about £12.
It shows you contours and/or hillshading; you can plan routes (with on-device path-finding) just by tapping points along the way, then export GPX files to a smart watch, or use them on the phone.
About 10 years ago I climbed Ben Nevis and found it invaluable; even though it was June, there was snow at the top, and then low cloud meant that visibility was maybe 15m, so the last section to the summit was phone out, making sure I didn't stray from the (invisible) path.
And last year, building up to my first 100km cycle ride, it was incredibly useful to be able to plot a series of steadily lengthening cycle routes, send them to my watch, and have the Garmin software on the phone call out directions from the bottom of the handlebar bag.