Activity Tracker
muOS Pixie has an Activity Tracker, there just isn’t a frontend readily available to view it on the device yet.
Right now, you can take
/mnt/mmc/MUOS/info/track/playtime.json
and upload that file to Game Dashboard as a way to see your gametimes.
There is also a script now that you can use on device to view playtime stats as well!
Check it out here:
Playtime Tracker