In 2012:

11 percent of free apps in Apple’s iTunes store collected address book data.

That means names, addresses, phone numbers, email contacts.
Source: What data is being collected on you? Some shocking info | TED Blog
You may have noticed the U.S. stock market is in free fall. Some blame a looming trade war. However, it seems likely that the entire tech industry is about to be hit with heavy handed regulation because the entire tech industry has been down on hands and knees begging politicians for heavy handed regulation. This could dramatically slow tech industry growth opportunities, at least for those that do not actually build useful products and services.