Call Lists makes it easy for you to keep track of the different phone calls you have to make during the day.
The simple interface lets you easily create lists, which can then be filled with contacts from your addressbook. Afterwards, walk through each list and do the calls you need to do right from within the app, marking calls "Done" or "Pending" along the way. To help you remember later what you talked about earlier, you can add notes to each call.