I tried several apps with my Galaxy watch. Hole19 and Golf Pad worked pretty well and gave accurate distances. Pricing is around $30-40/yr I believe, Hole19 is a bit more expensive.
Recently I switched to another app, 15th Club. Two things I like about it - 1) it gives aerial map on the watch in addition to distances, 2) it's free. Distances seems to be accurate and it has all the courses I play. I'm surprised at how useful the maps on the watch are, considering it's a small screen. I think they have Apple Watch compatbility too, though I didn't check, being a Samsung user.
Good luck! Please post what you end up using.