Strongbox

Strongbox is an option when an existing database is more important than adopting a new hosted vault format. Its repository lists both Password Safe v3 and several KeePass formats, which helps when bringing an older file into an Apple-device workflow. Check the file format before choosing a database, especially if it contains attachments: the repository describes attachments for KeePass-format safes. Keep a separate copy during migration. The project provides a native application with its own implementation, rather than merely renaming the original KeePass program.

The repository makes an unusual licensing/build distinction: it publishes source but says some non-code files and build material are omitted, and explicitly says the native-app repository does not meet the OSI definition of open source. Review that limitation if building or redistributing the app matters to you.