Your iPhone is already a capable camera. With a decent tripod mount, you can do even more with it. The Zecti 360-Degree Tripod Head for iPhone allows for 360-degree rotation, so you can make vertical and horizontal adjustments to take the perfect shots. It has a 1/4″-20 screw on top for your LED light, microphone, and other shooting gear.
This tripod head works with sliders, monopods and sliders. It can handle phones up to 6″. It ships with a 1/4 to 3/8 screw adapter.