UDPTCPREST Network Utility is a comprehensive network utility application designed for iPhone users. It offers a range of essential features for network communication:

1) UDP: Send and receive datagrams in string or hexadecimal format, allowing communication between instances of the application or with servers. Customize ports for receiving datagrams.

2) TCP: Supports TCP Client and TCP Server modes for connecting to servers or creating server instances. Exchange messages and view responses conveniently.

3) REST: Perform GET, POST, PUT, and DELETE requests with ease. View outputs in RAW or JSON format, with a JSON builder feature for request bodies.

4) Network Scanner: Scan single or multiple IP Addresses, test open ports, and view detailed scan responses. Configure timeout periods for scans in Settings/Info.

The app also provides information on private and public IP Addresses and available network interfaces. For privacy and terms, refer to the provided links.