For around $9 you can get a bluetooth remote shutter. These are great for avoiding bumps caused by tapping the screen, and controlling Buttery from a distance. You can start / stop recording, zoom in / out, or take a photo without touching your device. Here's two options we've tested.
This small, flexible tripod lets you point your camera exactly where you want it to look, and hold it steady for great results. It also includes a Bluetooth remote shutter.
For amazingly smooth camera motion, we recommend the OSMO Mobile gimbal for iPhone.
By the way.. “Buttery” and “Buttery Smooth Video Camera” are trademarks of Simple Fun, all rights reserved. All other trademarks are property of their respective owners.