in the article it doesn't seem to mention any comparison made between HippoCamera versus just taking pictures and then occasionally looking back at them. like is it the app that does it or is it just revisiting memories? if i missed that in the article please let me know. i mean if this app basically makes Apple-style live pictures and reminds you to look at them via push notifications then ok it is an app that adds a little value, but if the recall is strengthened by occasional revisiting of memories then that should be what the paper is about.