I wonder what you think is the best stable camera app. I'm aware of two, night vision and darkroom (there is a lite version for free). I tried both and darkroom got my vote, night vision has a worse interface and is bad in saving the pictures, found darkroom to be superior.
I use Nightvision (I haven't tried Darkroom) and it works really well. I even use it during the day if I want to minimise fuzzy shots! It worked really well when I used it to take photos of my angel fish swimming in their tank. The fish really kept moving around but there is a noticable difference between the photos I took of them using Nightvision and those I took just using Apple's camera app.
