Try it here: https://github.com/xiles/XCStringsEditor.git
Check out the source from https://github.com/xiles/XCStringsEditor.git. Build and run. Open Localizable.xcstrings of your Xcode project. Edit translations and save. Check out your localizations in Xcode.
About
The Xcode has a built-in .xctrings Localization file editing, but this built-in editor is so limited that it is difficult to use conveniently. Therefore, I'm developing this app so that it can be used more conveniently, such as more improved filtering, marking items to work, automatic translation through Google translation, and translated contents through reverse translation functions. I will add the Translation Memory function and use Apple Glossary to add a more level of localization.