UPDATE: a multilingual version is going live in beta soon! Send us a message on the chat and we'll add you to the beta list.
Not yet... but we're certainly looking at this. 😃
In the meantime, there isn't much text in the app (apart from the headers and such) and the content is in your desired language anyway!
You can always use the automated Google Translate option offered in Chrome. Simply open Google Chrome, go to your Salesflare account, click Translate at the top, and Chrome will translate the web page this once.