24, and I'm actually 27, so pretty good. I messed up kinda early on the memory test but other than that I aced everything.
I think part of the test isn't just performing well in the tests but also figuring out how to complete them successfully. For example in the anagram test, it won't register your letters unless the white box turns blue when you drop a letter in it.
Congratulations! Your Brain Age is 22. I'm 42... Suck it bitches!