Here comes the solution. AdHoc POS is an android POS application that offer you simple and easy-to-use interface to work perfectly with small business. No ads, no registration, totally free of charge!
1.You can use it to take a photo with your product, set price and input inventory.
2. When someone want to purchase some of your goods, you can create an new order and select product you previously added. You can also remove added items, set discount or make service charges!
3.At day end, you can do clearing to post your orders. Posted order can be exported as CSV and send to your email address!