New features dont work on 5s

It looks like a good camera app, and Ive heard nothing but positive feedback from everyone. I like the complete control it gives you over the camera. But the new "slow shutter speed" mode (the main reason why I this app in the first place) doesnt work on the iPhone 5s. It didnt mention this anywhere in the description, update notes, or even on the official site for the app. Be warned, 5s users.

Kristin0797 about Camera+ Legacy, v8.0.2