The zip tie that went through the kickstand plate broke after 20 minutes of riding. So I'll replace it. The ones I have are even thinner though, but I guess it depends how brittle the material is compared to the supplied zip ties.

The CooSpo sensor seems to be working ok. Speed looked accurate. Cadence had a few high readings, maybe it's when I was standing on the pedals horizontally causing the magnet to pass the sensor rapidly. Cadence also took 5 seconds to drop to zero when I stopped pedaling, but I think that's from the way the formula is calculating in the app I was using.

One app had trouble maintaining a bluetooth connection. Another app seemed to work fine, and even picked up the sensors again pretty fast after they switched off from a rest stop. I thought you'd be able to connect 2 apps in the same phone to the sensor via bluetooth, but maybe there is a conflict between the 2 apps.