Length beats complexity. 16 or more is a good everyday target, 20+ for anything important.
Passphrases are easier to type and remember. 5 random words is strong for most accounts, 6+ for a password manager master password.
Strong passwords and easy-to-remember passphrases with a strength meter. Made on your device and never sent anywhere.
Free, no sign-up. Part of The Box, a collection of games and handy tools from the WatchMyTech team.