In reply to mike123:
I have used OruxMaps for about ten years. It used to access OS mapping via Bing maps, but the OS put a stop to that. Fortunately, I have a source of mapping, and can cut tile sets for Orux using MOBAC.
If I could officially access OS mapping via Orux, I'd be happy to pay for it. It may be that I have got used to using it, so it seems intuitive to me, but I also tried Locus and Galileo (Gaia, now, I think), plus a few others (including Viewranger) at around the same time I started using Orux, and found Orux to be by far the best app for me.
On the other hand, my colleague's 'WheresThePath' website is still the only mapping tool I know of that allows PRoW segments to be automatically added to route planning, provided the LA has made their PRoW segments available online. Bill added that feature to WtP years ago. Sadly, WtP, whilst still working, is not longer supported, and has a Google-specified maximum daily tile limit.