characteristics that are not inherent or essential, but added from the outside

बाहरी विशेषताएँ

English Usage: The extrinsic features of the app are what make it user-friendly.

Hindi Usage: ऐप की बाहरी विशेषताएँ इसे उपयोगकर्ता के अनुकूल बनाती हैं।