Yes, it is hand held, but if I don’t use the 90 deg camera I can mount it on my bike using a Manfrotto Super Clamp and a similar piece of metal. I just have to be careful not to use let it get too long away from the handle bar, because the vibrations will cause too much shake.
With regard to my phone, all I can see that the tracks it creates have much more errors than my Garmin. It is not that much extra to do inverse geotagging, so I will continue to use it. It may just have taken too many beatings be deliver good data.