Happy to explain
SMS = ability to send text reminders (e.g. leave gate open) directly from Cleaner Planner, no need to text manually from your phone or keep contacts in sync (big time saver)
GoCardless = ability to take direct debit payments directly from customers after job done, no need to chase debts or reconcile payment from bank statements (another big time saver)
Dropbox = ability to backup your customer database to the cloud and your PC = double the protection and peace of mind that your data is safe (I also backup hourly my side)
Mailchimp = ability to send out email promotions, e.g. to promote new services (e.g. gutter clears) to existing customers
Multi-user = ability to assign worksheets to employees, each of which can download the iOS/Android app and only see their worksheets, tick jobs off as done, paid etc while out and about
Hope that helps - any further questions just give me a shout.