I downloaded Bike from the Mac App store, with the expectation to try for a while, then to pay. This is what I did with TaskPaper - I was an early user, and eventually bought the version 2.
I read the License info for Bike on the web site. It seemed clear, and gives 3 options. But two don’t work as described
Option 2 is subscription from the Mac App Store, but there is no subscription option on the Store, nor any payment info
Option 3 is unlicensed (which is OK), but I have a status of invalid license (which suggests problems)