Sync your contacts and Start Earning - Verify your mobile number with OTP. Once your number is verified, sync your contacts on the app. You will be notified once syncing is complete. Post this, you will be able to view your contact list on the Goibibo App and see which of your contacts are existing Goibibo customers and which of them are not. In case any of the contacts are not registered, you will have the option of inviting them to use the Goibibo App. Once the contact accepts the invite and is registered on the app, you will get Rs. 50 goCash Plus in your goCash account every time they book on Goibibo. A user can earn a maximum of 1000 goCash+ in a calender month with the maximum wallet limit of Rs 500 goCash+.