App only offer.
1. Offer only available on apps to first time users of redBus.
2. Offer is applicable for a minimum ticket value of Rs 400.
3. Offer is applicable once per customer email or mobile number.
4. This offer is valid only for logged-in users who verify their mobile number with OTP (one time password).
5. Offer is valid for bus bookings done on or before 31-May, 2018.