Karaoke App (iOS) Development with Pitch and Tempo Adjustment

I am looking for a freelancer to develop a Karaoke App. (iOS) I have a huge collection of karaokes and you need to create cpanel (web) and Apps should update the data from web. 1. Live Pitch and Tempo Changing Options on Mp3 and MIDI tracks 2. Categorized and multi sub categorized database. 3. Mic Effects (Reverb, DSP, Delay Etc) 4. Multi Band Equalizers 5. Track Download option with above effects 6. Lyrics view, zoom, download option to users 7. In app track purchases 8. Record Video and Audio Features 9. File sharing options 10. App theme changing Options 11. About App 12. Privacy Policy 13. User downloads folder [login to view URL] short play 15. Admin Chat features 16 Admin bulk mp3 or midi track uploads option. 17. Order Management 18 CMS Management 19. File Management Etc are key features of this app. 20. Fast app loading 21. Youtube Integration Other requirements will be shared during discussion.