TrackAddict, Race Chrono..IOS Apps

Does anyone use TrackAddict, Race Chrono… ect…IOS Apps for karting and data tracing? Second question if you are, can you use the Iwatch (Smartwatch), rather then storing your phone on the kart?

I used racerender for a few years but have moved on.

I use lapsnap for downloading best session from mychron. Its a subscrition based app that can connect to mychron.

I’ve used Race Chrono with a racebox mini.