Generate incremental invoice for your customer/tenant as proof of receiving money.
Guide on how to save all your receipts (petrol/food/etc) and download them on monthly next year for filing tax.
Guide on creating your personal secretary - Remind you on your yearly todo task such as road tax renewal, ssm renewal etc.
Guide on self improvement goal - Set weekly goal and let's stay healthy!
Guide on creating defects on your new property. Pass this to developer/management office and track the status!
Some main function not used? Worry not! You can hide them.