Welcome, Kathy. To get a better idea of your options, go to the New Mystery Shoppers area of the forum and read the dozen or so topics that are "pinned" to the top of the list. There are tons of mystery shops that do not require special apps. To start making $$$, you may want to sign up with the 15 MS companies that are most discussed on the forum. That list can be "clicked" at the foot of the page.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.