You can make different shot lists, and select the one you are currently shooting on your app. Finish your shots. Select the next shot list. shoot, so on so forth. Name them each as you see fit. Email each list to yourself and done. As far as I can tell, as many lists as you want and as many shots on each list. I've gone back with the same load on a different day and selected the list and shots are added to it.
I've never used the shot string on the chrony, I just clear it when it says it's getting full....