Wonderful app, but last update made syncing a nightmare

This app is great except that after one of the recent updates, my app syncs constantly, turning the whole screen black and making it hard to continue shopping. Its not quick, either. Until this is remedied, I cant recommend the app because it is just too frustrating to have to keep pausing and waiting for the screen to come back. Please make the syncing occur in the background on the next update!

Molly78747 about Shopping List (Grocery List), v1.71