Audio Frequency Converter App Creation

I'm looking for a talented mobile app developer who can create an Android and iOS application for me. This app should be able to convert music to 432Hz, 528Hz, and custom frequencies. Key Features: - Conversion of music to specific frequencies - Compatibility with all streamed audio - Support for common audio formats: MP3, WAV, FLAC Ideal Skills: - Proficient in mobile app development for both Android and iOS - Experience with audio processing applications is a plus - Knowledge of audio formats and streaming services Please provide examples of similar projects you've worked on in your bid. Thank you.