Meaning of the word "at no cost" in English

What does "at no cost" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

at no cost

US /æt noʊ kɔst/
UK /æt nəʊ kɒst/

Phrase

without requiring payment; free

Example:
The software update is available at no cost to existing users.
You can download the e-book at no cost from our website.