Call Log Editor lets you change your call logs the way you want, so that you can secure your privacy.
Change any call to some other person name from your contacts
Change duration of calls
Change type of call from missed, dialled, received
Create a call in the call log or even schedule it for a time / date
This app is very useful for people who dont want to just delete the call log, but change it to other person names, or even create a call log entry without actually making a call.