But in this case at least, the third-party developer has produced exactly the wonderful result they're looking for. The screen shot at the end showing the difference between Apple's map and theirs is so stark and compelling. If I were hiking I'd pay $20+ for their version.
Edit to add: throwing out a price like that made me go check to see what they actually charge, and either Apple's presentation of in-app purchases or their use of it is sad: it gives the same "premium" item like eight times, with different prices. Maybe that's per month and then longer periods with bulk discounts? Maybe they have a lifetime option for $40? If I were a regular hiker, I'd go for that.