Democrat Charles Schumer's request comes after iPhone maker Apple tweaked its privacy policies last month after prodding from other lawmakers.
The distribution of third-party applications on iPhones and phones running on Google's Android system has helped create a surge in the popularity of those devices in recent years.
However, Schumer said on Sunday that he was concerned about a New York Times report that iPhone and Android applications can access a user's private photo collection.
He also referred to a discovery last month that applications on devices such as the iPhone and iPad were able to upload entire address books with names, telephone numbers and email addresses to their own servers.