Passwords (except on VERY poorly designed sites) are never stored in a form that can be "recovered". There may be a "reset my password" button on the Samsung site, so you can get an email with a temporary password sent to you - then log in with that password and change it to a real one (15-20 random characters - which, of course, you'll have to keep in a password safe, since no one can remember 50 or 100 passwords like that).
(KeePass has versions for Windows, Linux, OSX, Android, iPhone, etc., etc. - and if you keep the data file on a cloud server, all your devices are kept in sync because they're all using the same file.)