build a website like paytm.com without payment getway

i want to build a website like [login to view URL] without payment getaway there will be following functionally Earn Talk time:- 1) Login Screen: a. Authentication required user to enter his mobile number b. Once entered and pressed enter an OTP will get generated which will be automatically detected by an the APP c. Need this mechanism 2) Home Screen: a. Navigate to Offers b. Invite Friends c. Check my profile d. Current account balance e. Navigation Drawer which contains options as a. Offers b. Account Summary c. Redeem d. My profile e. Feedback f. Rate our App g. Terms and conditions h. Privacy policy i. FAQ j. Exit f. A strip at top of the app which keeps on flashing new deals and offers 3) Offers Page: a. Click on button mentioned in point 2.a which will navigate user to this screen. b. This screen contains the offers available for the user inside list c. A single list element contains offer icon, offer description and how much amount of talk time a user will get. d. Once user selects any one of the offer user will navigate to the server and from there user will get navigate to actual offer page. e. The info of the offer is also available for the user like how much time it will take an offer to get cash back and term and policies associated with the offer 4) Invite Friends: a. Click on button mentioned in point 2.b which will navigate user to this b. This screen will contain the different account such as Gmail, Facebook c. This sharing will contain a link to this application and a message for the d. Once the request has been accepted by other user, the request sender screen and WhatsApp by using which he can share the application. user to whom he/she is sharing. will get some rewards. 5) Check my profile: a. Click on button mentioned in point 2.c which will navigate user to this b. This screen will contain all the data which user has filled at c. Like DOB, Age, Gender, Income and mobile number. d. User should be allowed to change the data with proper authentication screen authentication screen. at any point of time except user’s mobile number. 6) Current account balance: a. User should get to know user’s current wallet balance at the top of the b. User should be allowed to redeem his/her wallet balance at any point home screen of time. 7) Navigation Drawer: a. A swipe from left of the screen or touch at top left corner of the b. This view must contain the options available for the user as mentioned application will open a new view for the user. in point 2.e 8) News Flash: a. A strip at top of every screen should keep on flashing current news b. This should contain a dynamic data which will keep on changing at any regarding new offers and how a user can redeem or avail these offers. point of time. redeem user can redeem their earning thru doing recharge