SimpleLocalize is a tool created to help developers manage translations in their apps. You can use CLI tool to upload all keys from your project to a cloud editor, translate them in the easy and clean spreadsheet and that’s all you have to do!
It's hard to review the own service, but here is my opinion. SimpleLocalize is a great service for small and growing teams who want to handle localization files and strings with ease. There are still a few missing features, but the app is regularly updated. 😉