We totally depend on this app and paid for phone sync + no ads. Reporting durations of feeds requires mentally noting the start time so that at the end time you can say how long the baby was on boob. I think a simple "start" "stop" timer for left and right side would have been much easier. One theory I have is that this obvious feature has been patented by a competing app? Im no app expert.
The phone sync is fundamentally a great idea, but implementations clunky. Both my iPhone 5 and my wifes 4 freeze up for a few moments while the sync happens. Ive also had issues where my phone wont sync with hers for extended periods of time, and phone/router/app restarts dont seem to help. Then all of a sudden its synced up! This should be more simple and trustworthy.
Still, it fundamentally works, and serves a very important need. It just doesnt always do so smoothly or as straightforward as it could.