What is roblox club free robux?

As an AI language model, I cannot verify the existence of any third-party apps or websites offering free Robux for Roblox. It is important to note that Roblox does not have an official program for free Robux, and any attempts to obtain them through third-party sources may lead to account termination or other consequences. Players are encouraged to purchase Robux from the official Roblox website or earn them through in-game activities. Additionally, if you encounter suspicious or fraudulent websites or apps offering free Robux, it is advised to report them to Roblox support.