Power Diary is simple, intuitive and easy to use. Whether we are making an appointment, generating an invoice, or looking up a client's history or details, it is quick and effortless. When you compare Power Diary with other systems there is such as difference both in terms of the extra things Power Diary can do, as well as the price. Using Power Diary is very economical too. We have also been thrilled with the support and service we have received.