How they compare
Both let you watch public shows free and only charge if you tip or go private.
Stripchat is the more polished of the two: a fast, modern mobile site, strong filters by category and live VR cam rooms. Tokens cost about 8 to 11 cents each, private shows get pricey, and there are a lot of upsell prompts.
Cam4 is a big community with lots of amateur performers and couples. Quality varies a lot from room to room and the interface feels busy.