Garmin Virb Ultra 30 looks interesting action cam for Mapillary use https://buy.garmin.com/en-GB/GB/p/522869
Does it work with Mapillary app? In Android or in iOs?
However somebody reported in Garmin forums that the camera is not geotagging photos shot in interval mode, which makes it really not suitable for standalone use without the app. https://forums.garmin.com/forum/on-the-trail/action-camera/150711-