OK, I think I may be able to finish connecting the dots. Cachly's View on Geocaching.com option will match the global iOS behavior for handling geocaching.com or coord.info links. I'm pretty sure when you initially install the Geocaching app, it makes itself the handler of those links because they have the power to do that as owners of those domains (or maybe there's an option right afterward that no one remembers). But I was able to change my preference between Safari or the Geocaching app by long pressing on a hyperlink like @rragan showed in the previous post and then choosing to open in Safari. For me, that option is sticky and iOS uses whatever I last selected globally (including in Cachly when using View on Geocaching.com). Before I started playing around today, my cache links would always open in Safari. After going to an email and then choosing to open in Geocaching app, Cachly started launching the app instead of Safari. And I was able to change it back the same way. Hopefully this works for you, too.