While some articles or videos claim these tools can generate free subscription codes, they are almost universally malicious for the following reasons:

Joining the HypeSquad doesn't give free Nitro, but it is a safe way to get involved in the community and occasionally receive perks.

If you have downloaded or run a file with this name, you should immediately disconnect from the internet and run a full antivirus scan. Why "Nitro Generators" Are Dangerous