Revel vs Square

The first wired ethernet connectivity for iPad POS systems. Manage multiple devices universally from any remote location. Save time with reports that explain your business progress and projection to you. Keep business up and running during an Internet slow-down or power outage
Accept credit cards on your iPhone, Android or iPad. Send invoices free with Square Invoices. Signing up for Square is fast and free, and there are no commitments or long-term contracts like with alternative services.
Face to face in the news:

2014 - Square adds analytics tools for small business to fight Revel

Mobile payments provider Square is launching Square Analytics, a free set of tools that tie in to its suite of register products, which already includes Inventory, Invoices, and the recently launched Appointments. Tying in to the data that Square already collects about a small business’s sales, Square Analytics is able to show real-time updates on which products are doing well, when sales are best each day, how many customers are being served, and more. For those retailers who don’t think they need updates for the very latest data, Square Analytics also sends data summaries to your email at your preferred rate; if you want to dig into that data, each email also comes with spreadsheets with all of the data captured by Square’s tools. Square Analytics can also tie into a retailer’s accounting software, letting you connect your account to services like Quickbooks or Xero.