I paid a one time license fee of 1Password, then I use it offline on laptop and iPhone. I sync them through wifi regularly. This offline use option is not very

I paid a one time license fee of 1Password, then I use it offline on laptop and iPhone. I sync them through wifi regularly. This offline use option is not very disclosed on the website but it’s possible and in my opinion it’s more safe. I’ve tried open source password apps but the problem it’s they are all from independent developers. These developers can’t afford security reviews and I can’t tell if the version on the App Store is the same of the version on GitHub. If there’s a vulnerability and passwords leak, a company can be legally responsible, it’s not the same with independent developers. And it’s not practical to install an app and its updates from source on iPhone. So I went with the closed source 1Password because it’s a big company and everybody is looking at them.