I need a android language mobile app to teach people a specific aboriginal language. Through a dictionary and games features

I am looking for an Android language app developer who can create a mobile app to teach a specific aboriginal language. The target audience for the app includes both children and adults. The client has the necessary permissions to use the aboriginal language in the app. The main features required for the app are a dictionary and translation function, as well as learning games.

Skills and experience required for this project:
- Android app development
- Language learning app development
- Experience with implementing dictionary and translation features
- Game development skills
- Familiarity with aboriginal languages and cultures

I already have a base code template with the following features.

**1. Firebase Authentication:**
- Feature: The code uses Firebase Authentication for user registration and login.
- Explanation: Firebase Authentication allows users to create accounts, sign in, and manage their authentication state. It's a secure way to handle user authentication in your Android app.

**2. LoginActivity:**
- Feature: The `LoginActivity` is an activity for user login.
- Explanation: This activity handles the user login process, including collecting the user's email and password, verifying the credentials with Firebase Authentication, and navigating to the home page upon successful login.

**3. RegistrationActivity:**
- Feature: The `RegistrationActivity` is an activity for user registration.
- Explanation: This activity allows users to create a new account by providing their email and password. It integrates with Firebase Authentication to create user accounts and navigate to the home page upon successful registration.

**4. HomeActivity:**
- Feature: The `HomeActivity` serves as the main activity after login/registration.
- Explanation: This activity provides access to other features of the app, such as games and a dictionary. It includes buttons to navigate to different parts of the app.

**5. GamesMenuActivity:**
- Feature: The `GamesMenuActivity` provides access to various games.
- Explanation: This activity includes buttons that allow users to access different games. Each button is linked to a specific game activity, which will provide the gameplay.

**6. DictionaryActivity:**
- Feature: The `DictionaryActivity` is an activity for implementing dictionary functionality.
- Explanation: While the provided code doesn't show the actual dictionary functionality, this activity is where dictionary-related features would be implemented. You would add features to search and display word definitions, for example.

**7. Game1Activity and Game2Activity:**
- Feature: `Game1Activity` and `Game2Activity` are activities for specific games.
- Explanation: These activities represent different games in your app. You can implement the gameplay and features for each game in their respective activity classes.

**8. UI Layouts:**
- Feature: XML layout files (e.g., `activity_login.xml`, `activity_home.xml`, etc.) define the user interface of each activity.
- Explanation: These layout files specify the arrangement of UI elements (buttons, text views, etc.) on the screen. They determine how the app's user interface looks.

**9. Navigation:**
- Feature: The code uses explicit `Intent` objects to navigate between activities.
- Explanation: The navigation between different parts of the app is achieved using `Intent` objects. Activities are started using these intents, allowing users to move from one screen to another.

**10. Error Handling:**
- Feature: The code includes error handling for authentication.
- Explanation: When authentication operations (login or registration) fail, the code handles these failures. You can display error messages or log the error details to assist the user or for debugging.

These are the key features and components identified within the provided code. To make the app fully functional, you would need to implement the specific functionality for each of these features, such as game logic, dictionary search, and UI design, in addition to the authentication and navigation features already present in the code.