Mark Zuckerberg didn't say this app was brand new - he just mentioned that he became aware of it recently.

SkinVision has been around for 5 years. "It was founded in 2011 in Bucharest, Romania based on a PhD study to apply the mathematical theory ‘fractal geometry’ for medical imaging. Fractal geometry simulates natural growth of tissue and is widely used and documented in biology." [1]

[1]: https://skinvision.com/team