SAN DIEGO -- Nikki Howell just turned 18.
"It's really not that safe nowadays to be out by yourself," she said.
And she just got her license.
"I had kind of a scary incident where I thought a guy was going to follow me," she said.
That's when a friend told her about the SafeTrek app.
"Anytime I go out and I'm in a place where I'm not quite sure of it, I'll use it," she said.
Here's how the app works.
"You just open it and you hold down this button," she said.
The phone is now in tracking mode.
"And once you're somewhere you feel safe and secure, you can let go," she said.
Users get 10 seconds to enter a code.
"I'll get a text that says, hey this is so and so from SafeTrek and we're happy that you're safe," she said.
If the code isn't entered ... a text is sent .. letting the person know someone from SafeTrek is going to call.
And if you're in danger and you're in a moving car... as long as you have your phone with you, they can still track you and send tips directly to police to help find you.
"Then if something happens, someone is on their way. Someone's being alerted and it's not just me by myself in trouble," she said.
She actually triggered the app last week.
"It actually made me feel really, really good because they alerted the police and I had the police calling me. And people from the app were calling me making sure I was okay," she said.
"It kind of ensured my trust in the app because I know that it does work," said Howell.