The app has not been updated for over two years now.
I have over 2000 photos on Flickr and the app does not work well. After launch it does not load the background image on the top part of the screen and the app is not working as it should. The uploadr does not work, the photos are only displayed if they are in cache. I have to kill the app and start again. After 5th, 6th launch (no rule) it loads fine and its working (and the background image is loaded).
It also uses CPU a lot, even iPhone 7 gets hot after few minutes of scrolling through the photos. I guess it has some problems with iOS 10. Tested on two different iPhones (5s and 7).
Apparently Yahoo is not going to develop it anymore.
Because of these problems I have to switch to Google Photos.
Yoyekyoyek about Flickr, v4.0.7