20 March 2017 Last updated at 07:17 GMT
It's a way lots of people choose to stay in touch with each other.
But is one of its new features causing more harm than good?
The NSPCC told us they have spoken to some young people who have been upset by Snapchat Streaks.
Ricky has been finding out more.
Snapchat is a massively popular social media platform millions of people use to share pictures or videos.