There is no one-size-fits-all answer to this question, as the best privacy apps for one person may not be the best for another. However, some apps that are generally considered to be privacy risks include social media apps, messaging apps, and email apps. Social media apps can collect a lot of data about their users, including personal information and activity data. Messaging apps can also collect data about their users, and may even share data with third parties. Email apps can also collect data about their users, and may be able to access sensitive information such as passwords and financial information.