The app often closes itself when switching to other tabs, and it fails to save when doing so. Often times I'll lose 20min of progress by opening Youtube for 3 seconds to select a new video to watch, because when I switch back to Paperclips, it suddenly decides to boot back up again despite never having been shut down. I also decided to revisit a previous world after unlocking an artifact right away. That pretty much deleted my artifact and reset 3 hours of doing an entire world to get it. F U.