Facebook does not share your personal data with app developers without permission, unless Zuck likes the app developer, in which case, they can have it.
For example, Facebook gave Amazon extended access to user data because it was spending money on Facebook advertising and partnering with the social network on the launch of its Fire smartphone. In another case, Facebook discussed cutting off access to user data for a messaging app that had grown too popular and was viewed as a competitor, according to the documents.
All the while, Facebook was formulating a strategy to publicly frame these moves as a way of protecting user privacy.
It’s hard to build a culture of ethical behavior into a company when the people in charge are ethically bankrupt.