Square now processing $4 million in mobile payments per day

Square is continuing to grow in the mobile payments space. After passing the $3 million mark at the end of May, Square is now processing $4 million in mobile payments daily, and is on track to reach over $100 million in transactions in July. Square’s COO Keith Rabois says that he expects the company to double this volume by October.

Square is planning on launching payments capabilities outside of the US in 2012.

iPad usage of Square is on the rise too, especially after the company launched a disruptive new iPad app to replace cash registers and loyalty cards. The breakdown in terms of usage are iPad (21%), iPhone (45%), iPod (3%) and Android (31%).

Over the past 12 months, Square has shipped more than 500,000 credit card readers, and is processing more than a million transactions per month. And Square devices are now sold in Apple Stores.

For professionals on the move and for small businesses Square is certainly something to consider.