Can you remember everyones names, phone numbers, email addresses, how much they owe, when theyre due? I certainly cant, this is why i use it. I know you use a diary but you have to physically check this, for the likes of cleaner planner, window cleaner pro...it tells you all this and when theyre due at a click of a button.
As pure h20 says about texting, just one of the features. For me GoCardless integration is amazing, one click and i pull the money owed to me.
Having it all laid out on my mobile, and which order to go in. It just works...however you do whatever works for you...having a system to think all these things for me is just one less stress.