Are there any legitimate applications on Android that can test network resilience against denial-of-service, similar to DDoS tools?

While explicit 'DDoS attack tools' are often illicit, there are legitimate network testing applications available on Android that can be used to simulate network stress or test resilience. These tools are designed for authorized penetration testing and network administration and may include features for sending high volumes of specific traffic types in a controlled manner, but they are typically used by professionals with proper authorization.