thanks for the feedback. I have adjusted the FAQ to have it left aligned.
Glad you like the logo, it is now quite all over the place so I am looking into making a standard position based on space. Will look into thicken the lines, but personally I like to have it as "unnoticeable" as possible but on the other hand it is the identifier of the product so have to check.
Obligatory: when collecting personal information the website should use https.
Typo "The app is in beta, en we will improve it."
I'm not sure a popup date picker is necessary (I know it's optional). A 20 year old would have to click 20 times. It also shows weekdays which should be irrelevant for the day of birth. Personally even to friends I'd like to skip the year.
Also, the logo is nice, but I find its strokes are a bit too thin.
[1] http://birthbook.me/faq