A simple yet robust iOS mobile application designed to streamline the payment voucher approval process for a small business. The application will implement a structured, multi-tier approval system involving four key roles: Manager, Internal Auditor, Accounting Manager, and CEO. Key Features Manager: Create and submit new payment vouchers. 01 Internal Auditor: Review submitted vouchers and validate them 02 Accounting Manager: Confirm financial compliance and process vouchers. 03 CEO: Provide final approval.