SHUTTER SPEED APP FOR YOUR PHONE CAMERA.
If your phone camera is your main device, you will need a 'shutter speed app' for your phone camera.
If you have an Android phone, you may already have shutter speed control, but make sure to check.
The shutter speed numbers often look like fractions, or simply list a range of denominators.
You need an app that will give you a range of slow shutter speeds (1/8", 1/4", 1/2", 1", 10", 30", 60", Bulb)
In the app, the shutter speed might not look like a fraction. It may just be a listing of the denominator of the shutter speed fractions. (ex: 250, 125, 60, 30, 15, 8, 4...).
For iPhone, if you can, get Slow Shutter Cam (Click here)
Other iPhone apps that are available, and would be useful for our purposes:
*These two are more expensive, but give you a lot of control that other apps do not.
There are free apps, but most allow a limited number of photographs before having to purchase, and/or do not include the full range of shutter speed.