Make adjustments to existing App on Apple store

I am looking for a talented and experienced freelancer to make adjustments to an existing App on the Apple store. Specifically, I am looking for feature enhancements, as I have specific features in mind which I would like to enhance. The changes should both improve the user experience and add new functionalities. Therefore, I am looking for a freelancer with the skills and experience to successfully complete this task. If you believe you are the right person for this project, I look forward to hearing from you.