The only requirement:

• Contributed any code using MSG91 API on Github/ StackOverflow / Quora/ any social site or interested in doing so?

Benefits for the SuperHeroes:

• Your profile displayed at our community page.
• On every sign up from your reference, you get a voucher worth Rs. 500.
  (Create and share your link. Update the link provided for referral sign up to https://msg91.com/?source=yourname)
• On every 5 developer referrals you stand to get a voucher worth Rs. 2500
• MSG91 T-shirt
• Unlimited SMS for testing