I recently downloaded the free version since I’m cheap. I already had a basic Cateye computer so I could log mileage, trip, average, etc. My computer always shows a slightly faster, longer, and average speed ride than Strava. I guess one could take the time to figure out which is more accurate, but my LBS owner indicated that Strava isn’t quite as accurate since it’s using satellite signals instead of the sensor on my wheel. He told me that the more/steeper the hills, the more it will be off since it measures more of a straight line distance. Maybe that’s because he sold me the computer and wants me to be happy with the purchase, who knows! But his basic premise seems like it could be correct, especially since my wife’s computer always shows very similar numbers to my computer. Plus, my computer shows that I’m faster than Strava, so I choose to believe the computer. 🤗 I only use Strava to keep track of how often (days per week) I ride to keep me focused. If the mileage or average speed is a little slower, I don’t think about it.