Worked Well
Worked okay for me on my iPhone 5, definitely takes a spin on the to-do list aspect of things and incorporating them with calls. Could be handy in work and or personnel environment . So far no issues in terms of not working or crashes, worked fine for me scheduling and calling . If your looking for a to-do list integrated with phone calls give this a try.
Kidguru about
Calls2Do - Call Manager (with back-up to eMail)