I've been working long on this, but I'm happy to announce this app is live now. You can now easily search an find Geocaches with Cacher!
https://apps.garmin.com/en-US/apps/624aed67-b068-45b4-92af-cbc1885b7e1d
Please let me know if you need any help or if you have feedback! I'm happy to look into it.
And if you like it, feel free to leave a rating or review, it would mean a lot to me!