Redfin Retail

This full feature POS runs on most Android devices and includes the following features

Credit, Debit, EBT, Split Tenders.
Sales, Refunds and Exchanges Transactions
Full Inventory Management
A CRM module that allows for managing of mailing lists and customer histories
Basic Discount and Coupon Promotions
Digital Receipts and Signature Capture
Inventory & Sales Reporting Packages (12 reports)
Sales Tax Reporting
Secure Anytime Anyplace Anywhere Accessibility to data
Offline Capabilities and
Unlimited cashiers