Zoho Creator Purchase Request App -- 2

I need a purchase request application in Zoho Creator that handles all types of purchases (office supplies, services, IT equipment, etc.).

Essential Features:
- Multi-level approval Workflow
- Cost estimation
- Reporting
- Ability enter notes at each level
- Email Alerts
- Web/Android App Interface
- Excel Upload of old data

Approval rules are predefined and consistent across all categories.

Ideal Skills & Experience:
- Proficiency in Zoho Creator
- Experience with rule-based approval workflows
- Strong reporting and cost estimation capabilities
- Prior development of similar applications is a plus