"3Ys Diary" is an application that can be easily viewed tabbed two years ago and last year's diary.
If you have a Twitter account, you can reflect on a diary posted tweets(*1).
・You can see it immediately tabbed three years of diary that day. The diary can attach photo.
・You can be reflected in a diary posted tweets from Twitter timeline.
・Support passcode lock on startup.
(*1)Because of the limited number of Twitter API Requset to get the 20 posts every three minutes.