Hi! This is not Kumamoto specific but since this is a Facebook page, I think it may be of interest to many readers. I referred to the instructions here to delete about half of the apps I had accumulated over time.
" . . . if you’ve been following the news around Cambridge Analytica, the data consultancy firm hired by the Donald Trump campaign for the 2016 US election that harvested the data of up to 50 million Facebook users without their permission through data collected from third-party apps, you may want to know how to make sure that something similar isn’t happening to you."
-- Kirk
Here’s how to check which apps have access to your Facebook account—and delete them
Even the apps your friends install can be sending information on you to other companies.