Simple Text-to-Speech Android App Development

I'm in need of an experienced Android developer to create a straightforward and user-friendly Text-to-Speech (TTS) application. This app should be capable of reading aloud the text entered by the user using natural-sounding speech.

Key Features:
- The app should provide both male and female voice options for the TTS function.
- The primary purpose of the app is to convert entered text into audio files.
- Additional features that would enhance the app include adjustable speech speed and the ability to save and share the audio files.

Ideal Skills:
- Proficiency in Android app development.
- Experience with Text-to-Speech technology.
- Ability to create simple and user-friendly interfaces.