Users "Unique Passwords" (aka "Master Passwords") are well salted with large "Random Codes" generated by the tool, then they are hashed! The hashed strings are the users "Final Passwords" that can be used to signup\login into websites, encrypt\decrypt files, and so on. The main advantage of Multi One Password over the other password-manager\generator tools is that even if hackers or other unauthorized people get access to the users data files, users should not get worried because Multi One Password tool does not store the users "Unique Passwords" (aka "Master Passwords") and does not store the other passwords as well (in this case, the "Final Passwords") into their data files.
Almost all Password Managers are unsafe because most of them save users encrypted\hashed passwords in files that are stored or locally in the users computers or in the Cloud. The only safe Password Manager that does not store users encrypted\hashed passwords neither locally in the users computers nor in the Cloud, is "Multi One Password".