Help Refine Existing Project

I already have a working asset, but it needs noticeable improvement. My goal is to fix issues that have crept in over time and polish the overall experience so it runs smoothly, looks current, and meets today’s standards... (Budget: $250 - $750 USD, Jobs: Agile Development, Mobile App Development, Project Management, Software Development, Technical Documentation, Testing / QA, Web Development, Workflow Automation)