UK spouse/fiancé visa 🇬🇧

Hey everyone! I have a question about financial requirements of the marriage/spouse or fiancé UK visa. Does the income requirement need to be shared between partners or is it only for the one person who lives in UK? And are savings included in it? I just see different information online and would like to know for sure from someone who got this kind of visa before. Would be really helpful!! 🫶🏻