The last couple of iPhones have great cameras. You can use them to capture high quality audio and videos everywhere you go. Capturing stable videos is not always easy, especially if your hands tend to shake a bit or you move a lot. Getting one of these video stabilizers for your iPhone could help you address that issue:
Steadicam Smoothee for iPhone 5: gives you the chance to take bounce free videos on your iPhone 5. It has an ergonomic grip and can be used as a table top tripod.
iPhone Video Rig: it is available for iPhone 4/S and iPhone 5. It has two grips and helps you capture better quality videos.
ALM mCAMLITE Stabilizer Mount: available for the iPhone 4/4S devices. This is an aluminum uni-body mCAMLITE mount with an omni-style mic.
SlingShot for Smartphones: it fits iPhones and Android devices. It offers you better one-handed control.
Lensse iSteady iPhone Support System: designed specifically for people who want to take a lot of videos using their iPhone. It is easy to install and has a universal mount screw.
These handheld video stabilizers allow you to capture bounce-free videos on your iPhone. They are not cheap but could be very useful for videographers on the go.