Researching this assignment, I came across “Slow Shutter Cam” by Cogitap software. Slow shutter cam is a $2.99 app that stimulates slow shutter speeds. The app developer says that it allows you to “capture a variety of amazing slow shutter speed effects that you only thought you could get with a DSLR.”
While the app is limited to iphone right now and locked behind a paywall, I really appreciate that it doesn’t require you to get any extra gadgets from your phone to unlock more camera functionality. I tried it out and I really enjoyed the weird stuff I was able to capture in the short time I was playing with it. I feel like there’s probably other (free?) apps out there that might achieve a similar effect though.