Yes, there is a simple way to ensure your Private Data in Facebook is Safeguard with one click!
Just go to Facebook on your favourite web browser & do the following:
2. Select Apps
3. Select Edit
4. Disable Platform
And no apps can come anywhere around with your private data on Facebook!
This will disable use of your Facebook ID to log into websites, mobile games, or applications & all the ones you may have done earlier will be removed including any posts that were made using those.
Be Safe !