How to check if my website hit by any update? Any free tool available online?
Did our traffic dropped? Did your positions in SERP dropped dramatically? Did you get any warnings on googl's webmaster tools? If not, 99% probability that your site is not affected.
You manually know that your website is hit by any update. Check website traffic, keyword and some of the indication webmaster tools highlight when your website is effective by Any problem.
Above I suggest that you manually know that your website is effected by any issues. Please analysis whole website and that your traffic or ranking is not effect or it effect by new update.