We all have passwords, right? Saving passwords everywhere doesn't really mean anywhere. That means on most major devices. macOS, iOS, Android, Windows, Linux. It covers almost everywhere.
Password management apps range from free to a monthly or yearly subscription that lasts forever. I'm a big fan of 1Password, but I can see the handwriting on the wall, and it doesn't say " lower prices ahead ." Are there cheaper options? Yes.
Secure. Simple. Free.
That's how Buttercup bills itself. Ensure. Simple. Free. But it is also a well-designed password manager that works on macOS, iOS, Android, Windows and Linux. That means you get pretty much the same cross-platform interface for the same price. Not bad, right?
Does this look familiar?
It's kind of the default interface for password managers these days. List of categories in the left sidebar. Details for a password selection in the right window (works a bit differently on smartphone screens, obviously). What you get is the basics, no frills, but good security, ease of use and the right price.
Secure – Strong 256bit AES encrypted archives that meet today's security standards. That is the standard for most password processors.
Simple – User-friendly interface with basic concepts makes it possible to store and find your login details for a piece of cake. Standard interface provides no surprises.
Free – Free to try, free to use, works across platforms.
What should you not like?
Buttercup for desktop is a beautifully simple password processing designed to help you manage credentials. Buttercup uses very strong encryption to protect your sensitive details under a single master password. Use it next to the browser extension and mobile app for a fully portable experience.
Buttercup stands in stark contrast to the more expensive – and functional – stairs also means complexity and a learning curve, not to mention subscription prices – password processors. 
These browser extensions can be useful because they allow you to use Google Chrome and Mozilla Firefox to sign in to websites. Oddly enough, Safari for Mac is not on the list. The app also imports information from 1Password, KeePass and LastPass (haven't tried it yet).
Buttercup also allows you to sync an archive of usernames, passwords and other important information via Dropbox and other cloud services (but not standard to famous ones such as Microsoft OneDrive or Google Drive or Box, although it should simply be by saving a archives). I tried it with iCloud and it works great. The price can't be beat. Buttercup is simple, elegant and will not bother you with any features you may not use