This is a great app for logging hikes, bikes, runs, and more. I was a bit confused about the subscription model of trails pro but talking with support clarified things. You can pay $4.99 for one year, record an unlimited number of trips and after that year all of your logs will remain but you will not be able to record new ones. It would be nice to pay a one time fee for unlimited logging though.
Teebolt about Trails · Outdoor GPS Logbook