Shady Contacts is designed to keep your sensitive call logs and text message away from prying eyes.
☆ Hide SMS and call logs away from stock apps
☆ Unlock code protection (PIN or pattern)
☆ Option to hide app from launcher (by default, dial ***123456### to open)
☆ Auto-lock (don't use app for awhile), auto-destroy (after wrong code some times), quick lock
☆ Restore call logs/text message from/to stock apps
☆ Support Holo theme
Discussion on XDA forum: http://goo.gl/vJWQ9