Strongbox is for people who decided their passwords should live in a file they can see, back up and move, rather than in a vendor's account. The file is a KDBX database — the KeePass format — so if Strongbox vanished tomorrow you could open it in KeePassXC on Linux and carry on. What you are buying is the Apple-side polish that the open-source clients never really got: AutoFill that works in Safari and in apps, Face ID and Touch ID unlock, an SSH agent that hands keys to your terminal, YubiKey support, and sync over whatever storage you already pay for.
The one-time price is $124.99 and it is a real one-time price, not a three-year subscription wearing a hat. It covers Mac, iPhone and iPad, and Family Sharing extends it to six people, which is where the arithmetic gets comfortable — against 1Password's family plan it stops being a close call.
Against the $24.99 yearly, though, it is close. Five years is the break-even, so if you are not fairly sure you will still be running Strongbox in 2031, take the subscription and decide later. And if you are happy configuring KeePassXC yourself and do not need mobile AutoFill, that is free and does the same encryption.



