Currently, Spark supports English, German, Simplified Chinese, Ukrainian, Russian, Spanish, French, Italian, Japanese, and Portuguese languages.
The display language in Spark depends on the language selected in your device's settings: if your device language is German, Spark will be displayed in German as well.
Note: If Spark doesn’t support your device's language, it uses the next supported language listed in the system language preferences.
Therefore, if your device language is Hindi and English is the second on the list, Spark will be displayed in English.