SaaS Form Builder with Data Tracking

I'm looking for a web and mobile application that allows me to make client and staff accounts in which they can log in to the website, create fillable forms, send them to staff members, who will fill them out and send them back. The application should then be able to export those forms in a digestible PDF file to send to clients and track the forms' data through graphs on the website.

Key Features:
- Mobile app compatible with both iOS and Android
- Capability for staff to fill out progression forms for clients they worked with
- A form creation tool that allows me to custom-design forms
- Exporting function to send forms to clients as PDF
- Data tracking visualized through graphs on the website
- SaaS

Ideal Skills:
- Full-stack web and mobile development
- Experience with SaaS platforms
- Knowledge in data visualization
- UI/UX design experience for user-friendly interface