This website contains sexually explicit material. By entering you confirm you are at least 18 years old (or the age of majority where you live) and that viewing such material is legal where you are.
These are the two biggest free-to-watch cam sites, and on the basics they're very close. Both let you watch public shows and chat without paying, both run on tokens, and token prices are in the same range on each: roughly 8 to 11 cents a token at the time of writing.
Chaturbate's strength is size. There are more models online at any hour than anywhere else, so whatever you're into, someone is usually live. The trade-off is an interface that shows its age and free rooms that can get busy and noisy.
Stripchat is the more modern of the two, and it shows most on phones, where it's faster and easier to use. Its category filters make it quicker to find a particular type of model, and it has a dedicated set of VR cam rooms streamed for headsets, which Chaturbate doesn't offer. Expect more upsell prompts along the way.
On paid shows, the picture is similar: tipping drives public shows on both, and private and cam-to-cam shows are where spending climbs.