Ohacash money manage app for iPhone and iPad

This app is used to manage a virtual money for user accounts. No real transaction of money is involved in the app and payment gateway is not involved too. All user accounts are created by admin (Menu: User Management -> Create User). The admin allocates a sum of value to each user (Menu: Fund Allocation -> User Allocation).
When user spends physical money on any bills, the user login to this Ohacash app and using the menu, Expense Entry" the user adds the bill details to claim the bill value. Once the expense entry form is submitted, a request for approval is queued for admin. Then the admin logs in to admin account, under the menu "Approvals & Rejects" -> "Request for Approval", the users expense entry details will be queued. Once the admin approves / rejects the expense entry, the users account value is deducted / not deducted respectively.
When the admin approves the users expense entry, the users allocated (virtual) fund will be kept on deducted. Once the (virtual) fund reaches a minimum, the admin allocates more (virtual) fund value to the corresponding user.
Business Model: By using this app, admin gets an overview idea of how much fund value are allocated to each user and how the user spends on bills.