Before throwing his obnoxiously red “Make America Great Again” hat into the political ring, Donald Trump was known for his reality-TV stints and many businesses. Although the president-elect has not hinted at closing his businesses to lead the country, there are ways that all of us can make sure that he doesn’t use politics to profit any more than he already has. 

The Democratic Coalition Against Trump has created an app called Boycott Trump, which offers its users an organized list of all the companies that have ties to Donald Trump’s empire.

“This app is a first step in our larger Boycott Trump campaign, which will feature a unified grassroots movement centered on holding companies and individuals that help Trump in any way accountable,” Nate Lerner, executive director of Democratic Coalition Against Trump, told the Huffington Post. “The campaign is all about empowerment.… By doing so, we aim to give people a safe and productive way to voice their disapproval of Trump. We’ve accepted Trump won the election, but that doesn’t mean we have to accept everything he stands for.”

Some companies, such as Starbucks (has locations in Trump Tower), may be difficult for many to boycott, while others should be much easier.

Some of the more noteworthy companies on the list include Amazon, which sells Trump’s line of menswear as well as Ivanka’s clothing; and Groupon and Sprint, which sponsor Celebrity Apprentice.

The Boycott Trump app is available in iTunes and Google Play.

Update: An earlier version of this stated PayPal's co-founder Peter Thiel had ties to Donald Trump; however, Thiel has not been associated with PayPal since he sold the company in 2002.