This might be known already, but I bet that Microsoft decided to switch Edge to Chromium instead of forking Gecko/Firefox because Google either bribed them or threatened to lower Microsoft sites’ ranks in search results.
Otherwise why would MS use a web browser controlled by one of their very few competitors?
Edit: maybe they were enthralled by the promise of using Proton/Chromium based “desktop applications” (which just contain an entire Chromium browser in their install directory) to cheaply create apps that people are forced to use in their jobs, like Teams. Which is still awful even after they made it a full UWP desktop app. Like Skype already was.
AllTrails and other apps like it put publically accessible trail/hiking maps into app form and have user reviews and trails rated for their difficulty. And they use GPS for trail navigation to help out inexperienced hikers or mitigate poorly maintained trail markers.
They also charge a subscription fee for features like the ability to download a map and use it while not connected to the internet. “Pay us or you’ll get lost in the woods” is profitable, apparently.
Apple might be embedding trail maps into Apple Maps, but this article doesn’t explain that.