Timely Contacts

Timely Contacts takes the groups from your phone and shows them on a sorted list. You can put on a view pager till three groups in order to have them under control. The groups My Contacts has also been filtered in
order to show only the contacts having one phone number at least. You can also set automatic phone call feature with a refresh rate you can choose from 5,10,30 minutes , 1 or 3 hours.
You can also enable automatic sms feature (you must have enabled automatic phone call); it sends a message after 5 not answered phone call. For both of the features the costs depend on your carrier.