While Your Were Gone - Android Lock Screen

I have a VERY small budget for this project! I am looking for the following Android app! It's a "While Your Were Gone" app! Basically the concept is as follows.... Once your phones goes to standby, or has not been used for a period of time (night), the app will collect data from a few core places: unread emails missed phone calls missed text messges facebook messages/updates battery status change (battery strength increase or decrease since) If possible, it woiuld be nice to place this on the LOCKED screen...that way a person would not need to unlock their android phone to see if they missed calls, sms messages etc We will likely add more items to this in the future, so more money maybe available in the future.