I'm just checking out hashco.ws for the first time and cannot make any comments about quality or service, but one thing I want to ask:
In your opinion, how does one capital letter in a password raise the security?
Honestly, switch that off. It doesnt make a real difference.
If it forces you to use a different password than usual, then yes, it's effective. Use a password manager, don't wait for one of the hundreds of sites you're registered to have a leak and them have crackers trying your logins on several famous sites AND being able to login because you use the same password everywhere.
I'm not in the boat of using the same passwords everywhere. Security where security is due, ofc. I just dont think its a usefull "feature". And I've just been asking the hashcows staff about their intentions.