Appreciated.
Helpful for yourself? Server not found, and it last only 5 days after your comment. That means that this was not good (in the most soft terms) calculator. Maybe even malware.
And in BJ you don't need a calculator. Probability is counted very easy (i remember i wrote post about BJ with math) and what you need it's just a good risk/reward strategy. Nothing more.
for example, its not good idea to take one more card if you have many small cards on your hand (it's higher probability to get 22 and more with 4+ cards on your hand, than with two KK)