Making money is a full time job. So is getting paid. Square takes the guess work out of invoicing, your Point of Sale, Payroll and Contractor Payments/Taxes.
NOTE: Square has comparable fees to other Credit Card Processors such as Paypal, Quickbooks, Stripe and Venmo. The fees typically range from 2.75% to 3.5%. Square does offer a bit more functionality so all of your processing can be done in one place. These fees are not something you can get away from. Other processors will offer "better" fees, however, their products are usually lacking in the functionality and convenience of the product mentioned in this video.