This is a light-weight app that attempts to list your contacts in reverse chronological order**, putting the most recently added contacts at the top. This is useful for when you forget the name of someone you have recently met. It also can be used as a "to contact" list, to remind you to follow up with people you've recently met, whether they are business contacts or friends.
The app also has a "purge" mode, which allows you to delete contacts with one touch (by-passing the confirmation dialog). This is good for quickly and efficiently clean out old and useless contacts out of your phone book
** The built-in Contacts (phone book) app for android does not record a time stamp at the time you add a new contact to your phone, for this reason, there is no way to TRULY sort contacts in the order they were added. But each contact has an ID number that increments with each added contact and in a perfect world, sorting the contact by the id number effectively sorts it by the order they were added. But in reality, sometimes the ID numbers get out of whack, usually due to merging or migrating your contacts from one device to another. For this reason, sometimes you will notice some old contacts will show up at the top. This is not a bug, just a limitation of the Android system (iOS has the same issue).
This is why the built in Contacts app for Android and iOS don't offer this feature.
Please send me any feedback or feature requests by clicking the "send email" button at the bottom of the app page in google play.