Logline: A hardened cyber crimes analyst must shut down the source of a cursed smartphone app that seems to kill people who use it before the app strikes its next targets, her estranged family.

I like the premise. It reminds me of the Ring. Just needs a little polish. When you have “ that seems to” take that out. In my opinion apps can be used on many devices so “smartphone” may be remove. I feel you run into more conflict that way which makes the story mor interesting. Keep up the hard work.