Free as well.

I've looked at what Premium purports to offer, but I'm not entirely sure I want things like real-time segments. I think about Strava arguably too-much while I ride already. The last thing I need is it blurting out that I just finished a segment and cueing me to look at my phone 10 times pr ride...

I use Veloviewer to further churn my Strava data and, for now, the combination suits me fine.