Citrus Cube has made changes to its earlier offer of 50 Cashback on 50. Now it’s 50 Cb on minimum transaction of 100.
You can download Citrus Cube app from the playstore.

Link to the offer :-
http://www.citruspay.com/citruscash-offers.html

Terms and Conditions:

The cashback of Rs.50 is valid on transaction values of Rs.100 or more. No coupon code or promo code is required for this cashback offer.
The cashback is valid only on the first payment made through Cube between 1st August 2015 to 15th August 2015.
The cash back is valid on payments made using credit cards and debit cards only.
No cashback if first payment is made via NetBanking or Citrus Cash Wallet or the 1st payment is less than Rs.100.
The cashback will get processed automatically after your 1st bill payment into your Citrus cash Wallet.
In case of cancellation of payment transaction, the cashback amount will be withdrawn.
The amount credited into your Citrus Cash account is subject to the Citrus Cash terms and conditions.
Citrus reserves the right to not extend the offer to certain users if it believes they have malicious intent.
This is a limited time offer, and Citrus reserves the right to withdraw the offer at its own discretion.