There is a smartphone app that can help people suspected of driving drunk. It was created by an Iowa law firm — but some law enforcement officials are skeptical of the app’s intent.

If you see red and blue lights in your rearview mirror, perhaps the aptly named “Oh crap app” can help.

The app was designed to tell people what they can and cannot do when being pulled over for suspicion of drunk driving.

“One of the biggest mistakes people make is thinking that they know their rights,” Attorney Bob Rehkemper said. Rehkemper is one of the creators of the app.

He says it lists basic legal rights, has a blood alcohol calculator and an emergency “Oh crap” button for when a person is being stopped.

Hit it and get advice like “the less you say the better,” “be polite,” and “lawyer up.”

There’s more. When you hit the…

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