Multi-Platform Ionic Productivity App only 300$ for the work i don't have another cost

I already run a productivity-focused web application and now need the very same experience delivered as a modern Ionic app for both iOS and Android. Every feature that exists on the site—task creation... (Budget: $30 - $250 USD, Jobs: GraphQL, Ionic Framework, iPhone, Mobile App Development, OAuth, PhoneGap, REST API, Version Control Git)