Now a days There are many e-wallets in the market . Oxygen wallet is one of them. Once I saw it in an advertisement so I installed it . But I am not satisfying with his service because whenever I tried to do a transaction there is always a pop up notification appears that plz try again . I am tired of it I caall customer service but they attend my call in 9th time . Very poor customer service. Even after there customer service are not toll free they use landline which has very high call rates. There cashback doesnt come frequently they take too much time . I reccomend you to go for other apps like paytm but not for this.