Offline Ringtone android app.

I am looking for a developer to create an offline ringtone Android app that includes the following features:

- Customizable ringtones
- Notification tones
- Alarm
- Share the ringtone.
The app should be compatible with both the latest Android versions and older versions. Additionally, the primary target audience for the app is all age groups.

Ideal skills and experience for this project include:

- Strong knowledge of Android app development
- Experience with creating customizable ringtones and notification tones
- Familiarity with integrating an alarm clock feature into an app
- Ability to ensure compatibility with different Android versions
- Understanding of user interface design for all age groups.