With the advent of password wallet apps, and the great keychain function that comes with iOS and MacOS theres no need to be making up insecure passwords (or even worse - reusing them on all your accounts!).
This simple little app allows you to have some control over what type of password you want: length, types of characters used and types of characters not used are all configurable. Its as easy as select a few toggles, generate the password, then copy to your clipboard, after that simply paste into the password field youre using.