And the last date they received information about me according to Facebook is the last date I used the app. Revolut mentions "Analytics providers" in their privacy policy as companies they are sharing my data with.

For me it seems there is a 3-day difference between the last time I've used the app (today) and the last time they shared data with facebook.

>The summary doesn't contain your most recent activity. It may take a few days for your activity to show in your off-Facebook activity. The dates in your activity summary are when we received the activity.

https://www.facebook.com/help/2207256696182627

That one surprised me as well.

Why is it surprising?

Because Revolut is the only fintech/banking app that is actually on the list. I do have other 3 banking applications installed on my phone that I regularly use + N26 (another fintech) -- none of these are in the data sharing list.