I started using it, but I was a bit afraid at first. I did not immediately understand that I did not need to enter the folder name before reading the QR. Suggestion 1: Exchange the position (set the "read QR" button at the top of the page). Suggestion 2: If there is no obvious argument against, just do not allow typing the folder name. Then, there is something really weird. Each time I press the "read QR" button, if the QR code is not visible in the photo app, the window stays open. Then, when it sees (even a part of) the QR on the LCD screen, the photo window closes immediately, but... nothing seems to happen. In 40-50 trials, the app seemed to recognize the QR, but did not display the folder name (and no error message either). Since I was persistent enough (At least 30-40 trials on both iPhones I own), I noticed once that the folder name was recognized (it was now working fine). It took a lot of patience, I tried on two different LCD displays since I noticed the issue of "moiré" in the photo sometimes. I also tried to do the thing in airplane mode. It's just utter perseverance which got it working. Now, it seems OK and the synchronization went well and fast. I'll check how it goes now with deeper activity. Feature: I guess this is a design decision, but I found it surprising that I had to set synchronization to auto (what I expected to be the default setup). Please, consider changing the default... Thanks for this tool.