We use it, and you're right it doesn't send out a report at the end of the day. They have to check it.
I worried about that too....but it does give notifications if they have the app on their phones ("New photo of Johnny") and all you do is tap the notification to view the report.
It's there, and if they can't handle tapping a picture, oh well
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ETA: We used to use one called Mychild, which does send out a daily email. We had lots of problems with them, but I suspect it was mostly because we were using the crappy Android version of the app. The Apple version worked better.