Prisms CRM iOS version can be used as an offline application on iPad. Prisms CRM, developed by Zero Corporation, is a Customer Relationship Management Software. You can maintain a database of you customers and an inventory of all contacts you have with your clients, including maintaining notes on the product or services you provide to your customers.
If your business involves taking orders from your customers, there is a simple interface to take orders. The system will maintain the history of all orders taken over a specified period.