The circled app, is the 1 Second app. This is a really fun memory app. You film 1 second every day or pic 1 second from a video you took that day and add it to that day in the app.
This is what the calendar in the app looks like with your added daily videos. It automatically meshes them together to make a compilation with 1 second from each day.
I tried to include some of my video to show you what it looks like meshed togetyher, but the file is too big. Here's a link to the creator of the app doing a Ted Talk on his app. This is where I 1st learned about it. Enjoy!