10 speed cassettes are old school, you want 11 speed ;)

I like the ride logs, except the use of imperial distance measurements, of course. And perhaps order with the most recent at the top?

The graphs are pretty cool. Are you generating them dymanically? I'm just using Garmin Connect at the moment as I've not had the time to look into anything else.

They all use kilometers, you mean metric right? I was thinking of converting the calories measurement, but both calories and RPM are kind of standard units for cycling I think.

All the graphs are being generated dynamically, it's just a case of scp-ing the .TCX off the device (although there's a widget on developer.garmin to pull them off), and then a script generates the whole lot. There's a bunch of problems, but I'm probably going to sort those out and push this out as a public-ish app, if you're interested!