Android Music App Development

I am looking for a skilled Android app developer to create a music equalizer app, incorporating elements of Sound Beautifier. Expertise in minimalistic application design is a must.

Key Features:

- Customizable equalizer settings,
- Pre-set sound profiles,
- Audio visualizer.

Additional Functionalities:

- Playlist creation,
- Integration with other music-streaming apps.

If you have experience developing similar apps or have a strong understanding of music equalizer applications, please bid. Also, provide examples of previous work fitting this description for best consideration. You will be recommended to make a competitive offer as I am looking to balance quality and affordability.