Don't pay for it, won't start now. I use Cycling Analytics to track my training and power data, which is a great app.
I mainly use Strava just to check that no one has grabbed my Fiesta Island KOM. We grabbed this when training for the 2019 SCNCA TTT state champs (which we also won):
that was hard
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"Your beauty is an aeroplane;
so high, my heart cannot bear the strain." -A.C. Jobim, Triste