合墨数据 is a free iPhone app developed by Shanghai HeMo Data Science and Technology Co. Ltd. It falls under the category of Business & Productivity and offers a comprehensive set of features for payment and contract management.

With the 协议支付 feature, users can conveniently enter orders on the go and connect to bank custody services, ensuring legality and compliance. The app supports four-element verification and allows customers to authorize online deductions and installment payments. This makes it easy for businesses to handle payments securely and efficiently.

The app also provides an electronic contract system called 电子合同, which integrates signing, certification, and management into one platform. Users can sign contracts online without the need for mailing or waiting. The contracts are legally recognized and backed by third-party certification, ensuring the security of transactions.

合墨数据 offers a reliable and convenient solution for businesses to manage payments and contracts on their mobile devices. With its user-friendly interface and robust features, it simplifies the process and enhances productivity.