A recent study by the Future of Privacy Forum found that developers of top-selling mobile apps were increasingly using privacy policies to cover how they use customer data. Now the Federal Trade Commission is out with new guidance on what such policies should make clear to smartphone and tablet consumers.

Think of the FTC document’s nine bullet points on truthful advertising and privacy as “kind of a friendly reminder,” says Arent Fox partner Ross Buntrock, who leads the firm’s telecommunications practice in Washington, D.C. For starters the agency recommends that businesses “tell the truth about what your app can do” and “disclose key information clearly and conspicuously.”